Orthopaedic Nurse Certified (ONC) Exam — Questions and Answers

Question 1: A tourniquet is applied during extremity surgery primarily to achieve which goal?

Reduce postoperative swelling
Stabilize the limb
Prevent DVT formation
Provide a bloodless surgical field (Correct answer)

Correct answer: Provide a bloodless surgical field

Pneumatic tourniquets are applied proximal to the surgical site to occlude arterial flow and create a bloodless field, improving surgical visualization.

Question 2: What is the most effective communication approach for Orthopaedic Nurse Test professionals?

Adapting communication style to the audience while maintaining accuracy and clarity (Correct answer)
Using technical language exclusively
Only written communication
Minimizing all communications

Correct answer: Adapting communication style to the audience while maintaining accuracy and clarity

This is fundamental to Orthopaedic Nurse Test practice. Adapting communication style to the audience while maintaining accuracy and clarity represents the professional standard for communication in the Orthopaedic Nurse Test certification framework.

Question 3: Which position is typically required for a patient undergoing posterior lumbar spine surgery?

Supine with arms extended
Lateral decubitus with knees flexed
Prone with abdomen free of pressure (Correct answer)
Sitting upright in a frame

Correct answer: Prone with abdomen free of pressure

Posterior lumbar spine surgery is performed with the patient prone on a frame that allows the abdomen to hang freely, reducing epidural venous pressure and blood loss.

Question 4: What is the recommended weight-bearing status for a patient who has undergone a cemented total hip replacement, per standard protocols?

Weight-bearing as tolerated immediately (Correct answer)
Toe-touch weight-bearing only
Partial weight-bearing with crutches for 12 weeks
Non-weight-bearing for 6 weeks

Correct answer: Weight-bearing as tolerated immediately

Cemented total hip replacements allow immediate weight-bearing as tolerated because the bone cement provides immediate fixation without requiring bony ingrowth.

Question 5: Which type of bone fracture in children occurs on one cortex only, with the other side bending but not breaking?

Comminuted fracture
Torus fracture
Physeal fracture
Greenstick fracture (Correct answer)

Correct answer: Greenstick fracture

A greenstick fracture affects one cortex while the opposite cortex bends, occurring in children whose bones are more flexible than adult bone.

Question 6: Which range-of-motion exercise involves the patient performing movement independently without assistance from the nurse or a device?

Active ROM (Correct answer)
Passive ROM
Active-assisted ROM
Resistive ROM

Correct answer: Active ROM

Active ROM is performed by the patient using their own muscle strength without any external assistance, promoting strength and joint mobility.

Question 7: The rotator cuff of the shoulder is composed of which four muscles?

Supraspinatus, infraspinatus, teres major, subscapularis
Supraspinatus, infraspinatus, teres minor, subscapularis (Correct answer)
Deltoid, infraspinatus, teres minor, subscapularis
Deltoid, supraspinatus, infraspinatus, teres major

Correct answer: Supraspinatus, infraspinatus, teres minor, subscapularis

The rotator cuff consists of the supraspinatus, infraspinatus, teres minor, and subscapularis muscles, which stabilize the glenohumeral joint.

Question 8: A patient with a long leg cast reports increasing pain, tingling, and inability to dorsifllex the foot. What does the orthopaedic nurse do first?

Administer IV pain medication
Elevate the extremity above heart level
Bivalve or remove the cast and notify the physician (Correct answer)
Apply ice over the cast

Correct answer: Bivalve or remove the cast and notify the physician

Signs of compartment syndrome (worsening pain, paresthesia, motor weakness) in a casted limb require immediate cast splitting (bivalving) or removal and urgent physician notification.

Question 9: Prior to total hip arthroplasty, which positioning precaution is most critical for the nurse to reinforce with the patient?

Avoid crossing legs at the ankles
Keep the operative leg elevated above the heart
Avoid hip flexion beyond 90 degrees (Correct answer)
Apply ice to the hip every 2 hours

Correct answer: Avoid hip flexion beyond 90 degrees

After total hip arthroplasty, patients must avoid hip flexion greater than 90° to prevent prosthesis dislocation, especially in the early postoperative period.

Question 10: Type IV osteogenesis imperfecta has been identified in a child who has sustained many fractures. What kind of exercise is most advantageous?

None of the above
Swimming (Correct answer)
Weight lifting
Jogging

Correct answer: Swimming

Type IV osteogenesis imperfecta causes fragile bones and an increased risk of fractures. Swimming is an ideal exercise because it provides a non-weight-bearing environment, significantly reducing stress on the bones while still allowing for muscle strengthening and cardiovascular conditioning. This minimizes the risk of fractures compared to high-impact activities like jogging or weight lifting.

Question 11: How do Orthopaedic Nurse Test professionals build trust with clients or stakeholders?

Through marketing only
Through consistent competence, transparency, reliability, and ethical behavior (Correct answer)
By always agreeing with clients
Through competitive pricing only

Correct answer: Through consistent competence, transparency, reliability, and ethical behavior

This is fundamental to Orthopaedic Nurse Test practice. Through consistent competence, transparency, reliability, and ethical behavior represents the professional standard for communication in the Orthopaedic Nurse Test certification framework.

Question 12: Which term describes the bone-forming cells responsible for synthesizing bone matrix?

Chondrocytes
Osteocytes
Osteoblasts (Correct answer)
Osteoclasts

Correct answer: Osteoblasts

Osteoblasts are bone-forming cells that synthesize and secrete the organic components of bone matrix, including type I collagen.

Question 13: A 16-year-old kid was identified as having spinal muscular atrophy, type III, after experiencing weakness in his lower extremities and trouble walking. Which of the following complications should the nurse advise the parents to prepare for?

Swallowing difficulties and impaired respirations
Death within 2 years of the onset of symptoms
Unstable and floppy limbs and trunk
Increased susceptibility to respiratory infections (Correct answer)

Correct answer: Increased susceptibility to respiratory infections

Spinal Muscular Atrophy (SMA) type III, while generally less severe than types I and II, still involves muscle weakness, particularly in the limbs and trunk. This weakness can affect the respiratory muscles over time, leading to impaired cough reflex and reduced lung capacity. Consequently, individuals with SMA are at an increased risk for respiratory infections, making respiratory care and monitoring a critical aspect of their management.

Question 14: Which standardized screening tool is recommended to assess fall risk in orthopaedic inpatients in the US?

Braden Scale
Norton Scale
Morse Fall Scale (Correct answer)
Waterlow Score

Correct answer: Morse Fall Scale

The Morse Fall Scale is widely used in US hospitals to assess orthopaedic and surgical inpatients for fall risk based on fall history, gait, IV use, and other factors.

Question 15: Which bone is the largest and strongest bone in the human body?

Humerus
Pelvis
Tibia
Femur (Correct answer)

Correct answer: Femur

The femur (thigh bone) is the longest and strongest bone in the human body, bearing full body weight during ambulation.

Question 16: Wolff's Law states that bone will adapt its structure in response to which factor?

Mechanical loads placed upon it (Correct answer)
Vitamin D intake
Blood calcium levels
Hormonal fluctuations

Correct answer: Mechanical loads placed upon it

Wolff's Law states that bone remodels and strengthens in response to mechanical stress, which is why weight-bearing exercise improves bone density.

Question 17: What type of traction uses skin tape or foam applied to the skin to exert pulling force on a limb?

Skeletal traction
Bryant traction
Manual traction
Skin traction (Correct answer)

Correct answer: Skin traction

Skin traction applies pulling force through adhesive tapes or foam boots attached to the skin and is suitable for short-term use with lower weight limits.

Question 18: What is a compliance management system in Orthopaedic Nurse Test practice?

An optional business tool
A structured framework of policies, procedures, and controls that ensure regulatory adherence (Correct answer)
A software application only
A government reporting requirement

Correct answer: A structured framework of policies, procedures, and controls that ensure regulatory adherence

This is fundamental to Orthopaedic Nurse Test practice. A structured framework of policies, procedures, and controls that ensure regulatory adherence represents the professional standard for regulatory in the Orthopaedic Nurse Test certification framework.

Question 19: During a shift, a nurse notices that important post-operative instructions were not communicated to the patient by the previous shift. The best action is to:

Provide the missing education now, document what was taught and when, and raise the gap at the next huddle (Correct answer)
Document that the previous nurse failed to provide teaching
Wait for the physician to re-order the teaching
Assume the patient was taught verbally even if undocumented

Correct answer: Provide the missing education now, document what was taught and when, and raise the gap at the next huddle

Immediate provision of missing education protects patient safety, while documentation and reporting the gap at huddle prevents recurrence.

Question 20: What is a risk mitigation strategy in Orthopaedic Nurse Test practice?

Implementing controls that reduce the likelihood or impact of identified risks (Correct answer)
Ignoring low-probability risks
Transferring all responsibility
Only addressing risks after they occur

Correct answer: Implementing controls that reduce the likelihood or impact of identified risks

This is fundamental to Orthopaedic Nurse Test practice. Implementing controls that reduce the likelihood or impact of identified risks represents the professional standard for risk management in the Orthopaedic Nurse Test certification framework.

Question 21: A patient asks the orthopaedic nurse to keep a conversation about medication side effects private from their spouse. The nurse should:

Consult the ethics team before agreeing to confidentiality
Document that the patient is withholding information from family
Inform the spouse anyway since they are the primary caregiver
Respect the patient's confidentiality request, as patients have the right to control their own health information (Correct answer)

Correct answer: Respect the patient's confidentiality request, as patients have the right to control their own health information

HIPAA protects each patient's right to determine who receives their health information, regardless of relationship to the patient.

Question 22: What is the primary goal of continuous passive motion (CPM) machine use after total knee replacement?

Maintain and improve joint range of motion (Correct answer)
Reduce postoperative bleeding
Stimulate bone growth around the prosthesis
Prevent infection at the surgical site

Correct answer: Maintain and improve joint range of motion

CPM machines passively flex and extend the knee joint postoperatively to prevent stiffness, reduce scar tissue formation, and promote cartilage nutrition.

Question 23: A patient returning from spinal fusion surgery develops sudden weakness and loss of bladder control. What is the priority nursing action?

Notify the surgeon immediately (Correct answer)
Encourage oral fluid intake
Administer prescribed analgesics
Reposition the patient for comfort

Correct answer: Notify the surgeon immediately

New-onset neurological deficits (weakness, bladder/bowel dysfunction) post-spinal surgery suggest epidural hematoma or cord compression — an emergency requiring immediate surgical notification.

Question 24: What is the first step in risk assessment for Orthopaedic Nurse Test professionals?

Purchasing insurance
Identifying potential hazards and vulnerabilities in the specific context (Correct answer)
Implementing controls immediately
Delegating to others

Correct answer: Identifying potential hazards and vulnerabilities in the specific context

This is fundamental to Orthopaedic Nurse Test practice. Identifying potential hazards and vulnerabilities in the specific context represents the professional standard for risk management in the Orthopaedic Nurse Test certification framework.

Question 25: What is the immediate treatment for confirmed acute compartment syndrome?

Elevation of the extremity above heart level
Application of a compression dressing
IV corticosteroid administration
Emergency fasciotomy (Correct answer)

Correct answer: Emergency fasciotomy

Emergency fasciotomy, the surgical release of the fascia, is the definitive treatment for acute compartment syndrome to relieve pressure and restore perfusion.

Question 26: The patient's arm is in a sling and a long-arm posterior splint with the elbow in 90-degree flexion following a right total elbow arthroplasty. Which sleeping position is most likely to be cozy for the patient, who needs to keep their right arm raised?

Supine with the head partially elevated (Correct answer)
Supine with the head flat
Side-lying to the right
Side-lying to the left

Correct answer: Supine with the head partially elevated

Following a total elbow arthroplasty, keeping the affected arm elevated is crucial to reduce swelling and promote healing. Sleeping supine (on the back) with the head partially elevated allows for the arm to be comfortably supported and elevated, often with pillows, without putting direct pressure on the surgical site. Side-lying positions would likely put pressure on the splinted arm or make elevation difficult, increasing discomfort and potential complications.

Question 27: Which kind of metastasis should be carefully watched for in a patient with osteosarcoma of the proximal end of the humerus?

Liver
Kidney
Lung (Correct answer)
Brain

Correct answer: Lung

Osteosarcoma is a highly aggressive bone cancer with a strong tendency to metastasize hematogenously (via the bloodstream). The lungs are the most common site for distant metastasis, occurring in a significant percentage of patients. Therefore, careful monitoring for lung metastases is crucial for staging, treatment planning, and determining the prognosis in individuals with osteosarcoma.

Question 28: A patient being discharged after spinal surgery reports new onset of urinary retention and saddle anesthesia. What is the priority nursing action?

Perform a bladder scan and document findings
Schedule a follow-up appointment for outpatient evaluation
Notify the surgeon immediately as this suggests cauda equina syndrome (Correct answer)
Insert a urinary catheter per standard protocol

Correct answer: Notify the surgeon immediately as this suggests cauda equina syndrome

Urinary retention with saddle anesthesia after spinal surgery is a red flag for cauda equina syndrome — a surgical emergency requiring immediate notification and intervention.

Question 29: Which type of gait pattern requires the patient to advance the crutches and affected limb simultaneously?

3-point gait (Correct answer)
2-point gait
4-point gait
Swing-to gait

Correct answer: 3-point gait

The 3-point gait pattern is used for non-weight-bearing conditions: crutches and the affected limb advance together, then the unaffected limb steps forward.

Question 30: Which type of cartilage covers the articulating surfaces of bones in synovial joints?

Hyaline cartilage (Correct answer)
Elastic cartilage
Fibrocartilage
Yellow cartilage

Correct answer: Hyaline cartilage

Hyaline cartilage covers articular surfaces in synovial joints, providing a smooth, low-friction surface for movement.

Question 31: What is a corrective action in Orthopaedic Nurse Test quality systems?

Blaming individuals for errors
Ignoring minor issues
Temporary workarounds only
A systematic response to eliminate the cause of a detected nonconformity and prevent recurrence (Correct answer)

Correct answer: A systematic response to eliminate the cause of a detected nonconformity and prevent recurrence

This is fundamental to Orthopaedic Nurse Test practice. A systematic response to eliminate the cause of a detected nonconformity and prevent recurrence represents the professional standard for quality in the Orthopaedic Nurse Test certification framework.

Question 32: How do Orthopaedic Nurse Test professionals maintain digital competency?

Through ongoing training, practice with new tools, and staying current with technological advances (Correct answer)
Digital skills are not required
Skills from initial training are sufficient
By hiring IT support for all tasks

Correct answer: Through ongoing training, practice with new tools, and staying current with technological advances

This is fundamental to Orthopaedic Nurse Test practice. Through ongoing training, practice with new tools, and staying current with technological advances represents the professional standard for technology in the Orthopaedic Nurse Test certification framework.

Question 33: When a patient utilizes a walker to get around, the walker's height should be

at the height of the hip
slightly above the waist
at the height of the elbow
slightly below the waist (Correct answer)

Correct answer: slightly below the waist

The correct height for a walker ensures proper posture and minimizes strain on the patient. When standing upright with arms relaxed at the sides, the handgrips of the walker should be at the level of the patient's wrist crease or slightly below the waist. This allows for a slight bend in the elbows (15-30 degrees) when grasping the handles, providing optimal support and balance.

Question 34: How can a nurse tell if a cervical collar is tight enough when it is being fitted?

Compare the collar and neck measurements
Ask the patient if the collar is comfortable
Ask the patient to flex the chin forward (Correct answer)
Ask the patient to attempt to turn the head from side to side

Correct answer: Ask the patient to flex the chin forward

A properly fitted cervical collar is designed to restrict neck movement, especially flexion. If the patient can easily flex their chin forward into the collar, it indicates that the collar is too loose and not providing adequate immobilization. Asking the patient to attempt this movement helps the nurse assess the collar's effectiveness in limiting cervical spine motion and ensuring proper fit.

Question 35: When instructing a patient in stair climbing with crutches after a lower extremity injury, the nurse teaches which sequence for ascending stairs?

Crutches and both legs simultaneously
Crutches first, then unaffected leg, then affected leg
Unaffected leg first, then crutches and affected leg together (Correct answer)
Affected leg first, then crutches and unaffected leg

Correct answer: Unaffected leg first, then crutches and affected leg together

When ascending stairs with crutches, the unaffected (good) leg leads, followed by the crutches and affected leg — 'good goes up to heaven.'

Question 36: How should an Orthopaedic Nurse Test professional present complex information to non-experts?

Skip complex topics entirely
Provide written reports only
Translate into accessible language, use visuals, and check for understanding (Correct answer)
Use full technical terminology

Correct answer: Translate into accessible language, use visuals, and check for understanding

This is fundamental to Orthopaedic Nurse Test practice. Translate into accessible language, use visuals, and check for understanding represents the professional standard for communication in the Orthopaedic Nurse Test certification framework.

Question 37: How should an Orthopaedic Nurse Test professional handle an outcome that differs from expectations?

Blame external factors
Ignore the discrepancy
Repeat the same approach
Analyze contributing factors, document findings, and adjust approach based on lessons learned (Correct answer)

Correct answer: Analyze contributing factors, document findings, and adjust approach based on lessons learned

This is fundamental to Orthopaedic Nurse Test practice. Analyze contributing factors, document findings, and adjust approach based on lessons learned represents the professional standard for practical in the Orthopaedic Nurse Test certification framework.

Question 38: How does continuous improvement apply to Orthopaedic Nurse Test quality management?

It means constant major changes
It involves ongoing incremental enhancements to processes based on data and feedback (Correct answer)
It is a one-time initiative
It applies only to products

Correct answer: It involves ongoing incremental enhancements to processes based on data and feedback

This is fundamental to Orthopaedic Nurse Test practice. It involves ongoing incremental enhancements to processes based on data and feedback represents the professional standard for quality in the Orthopaedic Nurse Test certification framework.

Question 39: What is the purpose of using a abductor pillow following total hip arthroplasty?

Reduce postoperative swelling by elevating the leg
Provide traction to the hip joint
Keep the hip in abduction to prevent dislocation (Correct answer)
Prevent deep vein thrombosis

Correct answer: Keep the hip in abduction to prevent dislocation

An abductor wedge pillow maintains the operative hip in abduction, preventing adduction and internal rotation that could dislocate the posterior hip prosthesis.

Question 40: When administering ketorolac (Toradol) to a post-operative orthopaedic patient, the nurse should be most concerned about which potential complication with prolonged use?

Hepatotoxicity and jaundice
Hypertensive crisis
Gastrointestinal bleeding and renal impairment (Correct answer)
Respiratory depression

Correct answer: Gastrointestinal bleeding and renal impairment

Ketorolac is an NSAID that inhibits prostaglandin synthesis, increasing risk of GI bleeding and reducing renal perfusion, particularly with use beyond 5 days.

Question 41: How do Orthopaedic Nurse Test professionals transfer knowledge from training to practice?

By passing the certification exam only
Knowledge transfers automatically
Training and practice are unrelated
Through supervised practice, mentoring, gradual independence, and ongoing feedback (Correct answer)

Correct answer: Through supervised practice, mentoring, gradual independence, and ongoing feedback

This is fundamental to Orthopaedic Nurse Test practice. Through supervised practice, mentoring, gradual independence, and ongoing feedback represents the professional standard for practical in the Orthopaedic Nurse Test certification framework.

Question 42: How should Orthopaedic Nurse Test professionals prioritize identified risks?

Randomly
By cost to mitigate only
Based on likelihood of occurrence combined with severity of potential impact (Correct answer)
Alphabetically

Correct answer: Based on likelihood of occurrence combined with severity of potential impact

This is fundamental to Orthopaedic Nurse Test practice. Based on likelihood of occurrence combined with severity of potential impact represents the professional standard for risk management in the Orthopaedic Nurse Test certification framework.

Question 43: What role does active listening play in Orthopaedic Nurse Test practice?

It ensures accurate understanding, demonstrates respect, and improves outcomes (Correct answer)
It means staying silent
It is only for counseling professionals
It wastes time

Correct answer: It ensures accurate understanding, demonstrates respect, and improves outcomes

This is fundamental to Orthopaedic Nurse Test practice. It ensures accurate understanding, demonstrates respect, and improves outcomes represents the professional standard for communication in the Orthopaedic Nurse Test certification framework.

Question 44: Which tool is commonly used for root cause analysis in Orthopaedic Nurse Test quality management?

Customer surveys only
Fishbone (Ishikawa) diagram to identify contributing factors systematically (Correct answer)
Random sampling
Profit analysis

Correct answer: Fishbone (Ishikawa) diagram to identify contributing factors systematically

This is fundamental to Orthopaedic Nurse Test practice. Fishbone (Ishikawa) diagram to identify contributing factors systematically represents the professional standard for quality in the Orthopaedic Nurse Test certification framework.

Question 45: Which anticoagulation agent is most commonly used for DVT prophylaxis following total knee replacement in the US?

Heparin infusion
Warfarin or a direct oral anticoagulant (DOAC) (Correct answer)
Aspirin 81mg only
Clopidogrel

Correct answer: Warfarin or a direct oral anticoagulant (DOAC)

AAOS and ACCP guidelines recommend warfarin or DOACs (e.g., rivaroxaban, apixaban) as standard DVT prophylaxis after total knee arthroplasty.

Question 46: The synovial membrane lines which aspect of a joint?

The intervertebral disc
The fibrous joint capsule inner surface (Correct answer)
The periosteum of adjacent bones
The articular cartilage surfaces

Correct answer: The fibrous joint capsule inner surface

The synovial membrane lines the inner surface of the fibrous joint capsule and produces synovial fluid for joint lubrication and nutrition.

Question 47: Which of the following consequences should be specifically watched in patients with psoriatic lesions on their nails?

Depression
Psoriatic arthritis (Correct answer)
Hypertension
Fluid and electrolyte imbalance

Correct answer: Psoriatic arthritis

Psoriasis is a chronic autoimmune skin condition, and psoriatic lesions on the nails are a common manifestation. A significant percentage of individuals with psoriasis, especially those with nail involvement, are at an increased risk of developing psoriatic arthritis. This is an inflammatory arthritis that affects joints and entheses, making monitoring for joint symptoms crucial in these patients.

Question 48: Which anatomical landmark is used to identify the greater trochanter of the femur during assessment?

Posterior superior iliac spine
Ischial tuberosity
Bony prominence felt on the medial knee
Bony prominence felt on the lateral proximal thigh (Correct answer)

Correct answer: Bony prominence felt on the lateral proximal thigh

The greater trochanter is palpated as a bony prominence on the lateral aspect of the proximal femur and serves as a landmark for hip assessment.

Question 49: A bisphosphonate such as alendronate is prescribed for an orthopaedic patient with osteoporosis. Which instruction is most important to include in patient teaching?

Take with a full glass of milk to enhance absorption
Take at bedtime to reduce GI side effects
Crush the tablet if swallowing is difficult
Remain upright for at least 30 minutes after taking (Correct answer)

Correct answer: Remain upright for at least 30 minutes after taking

Bisphosphonates can cause esophageal irritation and esophagitis; patients must remain upright for 30–60 minutes after ingestion to prevent reflux and mucosal damage.

Question 50: A newly hired orthopaedic nurse is unsure how to communicate a clinical concern to the attending physician. Which resource best supports safe communication?

Unit-specific communication protocols and mentorship from experienced staff (Correct answer)
Personal judgment about when concerns are serious enough to report
Waiting until the next physician rounding to raise all concerns at once
Texting the concern informally to the team

Correct answer: Unit-specific communication protocols and mentorship from experienced staff

Unit protocols and mentorship provide new nurses with safe, structured pathways for communicating clinical concerns appropriately.

Question 51: How do Orthopaedic Nurse Test professionals evaluate research quality?

By publication date only
By the reputation of the author only
By assessing methodology, sample size, peer review status, and relevance to practice (Correct answer)
Research quality cannot be evaluated

Correct answer: By assessing methodology, sample size, peer review status, and relevance to practice

This is fundamental to Orthopaedic Nurse Test practice. By assessing methodology, sample size, peer review status, and relevance to practice represents the professional standard for research in the Orthopaedic Nurse Test certification framework.

Question 52: The maximum recommended daily dose of acetaminophen for an adult without liver disease is:

3,000 mg/day
5,000 mg/day
4,000 mg/day (Correct answer)
2,000 mg/day

Correct answer: 4,000 mg/day

The FDA recommends a maximum of 4,000 mg/day of acetaminophen for healthy adults, though many clinicians recommend ≤3,000 mg/day in at-risk populations.

Question 53: A patient 6 weeks post-right total knee replacement reports redness, warmth, swelling, and increased pain at the surgical site. What does the nurse suspect?

Normal postoperative inflammation
Deep vein thrombosis
Heterotopic ossification
Prosthetic joint infection (Correct answer)

Correct answer: Prosthetic joint infection

Persistent or new signs of local inflammation (redness, warmth, swelling, pain) at 6 weeks post-TKR are suspicious for periprosthetic joint infection and require urgent evaluation.

Question 54: Subluxation of a joint refers to which condition?

Fracture adjacent to a joint
Inflammation of the joint capsule
Complete separation of joint surfaces
Partial displacement of joint surfaces with some contact remaining (Correct answer)

Correct answer: Partial displacement of joint surfaces with some contact remaining

Subluxation is an incomplete or partial dislocation where joint surfaces are misaligned but maintain some contact, distinguishing it from a full dislocation.

Question 55: Which class of medications works by inhibiting cyclooxygenase (COX) enzymes to reduce inflammation and pain in orthopaedic patients?

Tricyclic antidepressants
Muscle relaxants
Nonsteroidal anti-inflammatory drugs (NSAIDs) (Correct answer)
Opioid analgesics

Correct answer: Nonsteroidal anti-inflammatory drugs (NSAIDs)

NSAIDs inhibit COX-1 and COX-2 enzymes, thereby reducing prostaglandin synthesis and decreasing inflammation, pain, and fever.

Question 56: Which bone disease is characterized by low bone mass and microarchitectural deterioration, increasing fracture risk?

Osteoarthritis
Osteoporosis (Correct answer)
Paget's disease
Osteomyelitis

Correct answer: Osteoporosis

Osteoporosis is defined by reduced bone mineral density and deteriorated bone microstructure, leading to fragility fractures with minimal trauma.

Question 57: Which of the following scenarios most frequently results in stiffness for a patient with osteoarthritis?

At the end of the day after periods of normal activity
After periods of stretching exercises
After periods of rest (Correct answer)
After periods of weight-bearing exercises

Correct answer: After periods of rest

A hallmark symptom of osteoarthritis is 'gelling' or stiffness that occurs after periods of inactivity, such as waking up in the morning or sitting for a prolonged time. This stiffness typically improves within 30 minutes of movement. This phenomenon is due to the synovial fluid becoming less viscous during rest, making initial movement more difficult.

Question 58: What is the primary purpose of regulatory compliance in Orthopaedic Nurse Test practice?

To benefit regulators only
To create bureaucratic burden
To protect public safety, ensure quality standards, and maintain professional accountability (Correct answer)
To limit competition

Correct answer: To protect public safety, ensure quality standards, and maintain professional accountability

This is fundamental to Orthopaedic Nurse Test practice. To protect public safety, ensure quality standards, and maintain professional accountability represents the professional standard for regulatory in the Orthopaedic Nurse Test certification framework.

Question 59: What is the purpose of a quality audit in Orthopaedic Nurse Test practice?

To find fault with employees
To satisfy external requirements only
To systematically evaluate processes against standards and identify improvement opportunities (Correct answer)
To reduce staffing

Correct answer: To systematically evaluate processes against standards and identify improvement opportunities

This is fundamental to Orthopaedic Nurse Test practice. To systematically evaluate processes against standards and identify improvement opportunities represents the professional standard for quality in the Orthopaedic Nurse Test certification framework.

Question 60: What is the consequence of non-compliance for Orthopaedic Nurse Test professionals?

Potential fines, license revocation, legal liability, and reputational damage (Correct answer)
Just additional paperwork
Only verbal warnings
No significant consequences

Correct answer: Potential fines, license revocation, legal liability, and reputational damage

This is fundamental to Orthopaedic Nurse Test practice. Potential fines, license revocation, legal liability, and reputational damage represents the professional standard for regulatory in the Orthopaedic Nurse Test certification framework.

Question 61: Which outcome is the primary indicator that a patient is ready for discharge to home after total knee arthroplasty?

Full return to pre-surgery range of motion
Radiographic confirmation of bone healing
Ability to perform self-care and ambulate safely with assistive device (Correct answer)
Complete pain resolution

Correct answer: Ability to perform self-care and ambulate safely with assistive device

Discharge readiness after TKA is determined by the patient's ability to safely ambulate with an assistive device, manage pain, and perform basic activities of daily living.

Question 62: A 30-year-old guy is admitted to the hospital for intravenous antibiotics because he has septic arthritis in his right knee. Which of the following additional treatments would be essential to getting rid of the infection?

Nonsteroidal anti-inflammatory drugs
Corticosteroid injections into the joint
Hot compresses
Joint drainage (Correct answer)

Correct answer: Joint drainage

Septic arthritis is a severe infection within a joint, often caused by bacteria. While intravenous antibiotics are essential to kill the bacteria, the infected synovial fluid and pus must be removed from the joint space to reduce the bacterial load, relieve pressure, and prevent cartilage destruction. Joint drainage, either through aspiration or surgical lavage, is crucial for effective treatment and preserving joint function.

Question 63: Contraindications to ultrasound therapy include

a muscle sprain
a sprain
bursitis
a suspected fracture (Correct answer)

Correct answer: a suspected fracture

Ultrasound therapy generates heat and mechanical vibrations that can potentially disrupt the healing process of a fracture or worsen an undiagnosed one. Applying ultrasound to a suspected fracture site could delay proper diagnosis, cause further injury, or interfere with bone alignment and healing. Therefore, it is a contraindication to prevent complications and ensure patient safety.

Question 64: In managing a patient with rheumatoid arthritis who develops a painful flare during inpatient orthopaedic rehabilitation, the nurse's first action is to:

Apply heat packs to all affected joints
Increase the intensity of physical therapy
Encourage the patient to push through the pain with exercises
Assess the joints for signs of acute inflammation and withhold aggressive exercise (Correct answer)

Correct answer: Assess the joints for signs of acute inflammation and withhold aggressive exercise

During an RA flare, active inflammation contraindicates aggressive exercise; joint rest, gentle ROM, and anti-inflammatory management are prioritized to prevent further damage.

Question 65: The patella is classified as which type of bone?

Short bone
Sesamoid bone (Correct answer)
Flat bone
Long bone

Correct answer: Sesamoid bone

The patella is the largest sesamoid bone in the body, embedded within the quadriceps tendon to improve mechanical advantage at the knee.

Question 66: Which classification system is most commonly used to assess the severity of open fractures?

Neer classification
Garden classification
Weber classification
Gustilo-Anderson classification (Correct answer)

Correct answer: Gustilo-Anderson classification

The Gustilo-Anderson classification grades open fractures I–III based on wound size, contamination, and soft tissue damage to guide management.

Question 67: Which exercise is recommended during the early rehabilitation phase following anterior cruciate ligament (ACL) reconstruction?

Full squats to 90 degrees
Open kinetic chain leg extensions through full range
Plyometric jumping drills
Closed kinetic chain exercises such as mini-squats (Correct answer)

Correct answer: Closed kinetic chain exercises such as mini-squats

Closed kinetic chain exercises (e.g., mini-squats, step-ups) are preferred in early ACL rehab as they promote co-contraction of stabilizing muscles with less graft stress.

Question 68: Which muscle relaxant is commonly used in orthopaedic settings for acute musculoskeletal spasm and carries a risk of anticholinergic side effects?

Cyclobenzaprine (Flexeril) (Correct answer)
Baclofen
Methocarbamol (Robaxin)
Tizanidine (Zanaflex)

Correct answer: Cyclobenzaprine (Flexeril)

Cyclobenzaprine has a tricyclic structure and significant anticholinergic activity, causing dry mouth, urinary retention, and sedation, which nurses must monitor.

Question 69: Which approach best demonstrates professional competency in Orthopaedic Nurse Test practice?

Integrating continuing education, practical experience, and evidence-based decision making (Correct answer)
Relying solely on initial training
Avoiding challenging situations
Following only personal preferences

Correct answer: Integrating continuing education, practical experience, and evidence-based decision making

This is fundamental to Orthopaedic Nurse Test practice. Integrating continuing education, practical experience, and evidence-based decision making represents the professional standard for professional standards in the Orthopaedic Nurse Test certification framework.

Question 70: What is the primary value of case study analysis in Orthopaedic Nurse Test training?

Replacing hands-on experience
Learning only from failures
Memorizing specific outcomes
Developing critical thinking by applying theory to realistic professional scenarios (Correct answer)

Correct answer: Developing critical thinking by applying theory to realistic professional scenarios

This is fundamental to Orthopaedic Nurse Test practice. Developing critical thinking by applying theory to realistic professional scenarios represents the professional standard for practical in the Orthopaedic Nurse Test certification framework.

Question 71: A patient recovering from total knee replacement is on a PCA (patient-controlled analgesia) pump with morphine. The nurse notes a respiratory rate of 8 breaths/min and pinpoint pupils. What is the priority intervention?

Notify the surgeon and document findings
Increase the PCA basal rate
Reposition the patient and apply oxygen
Administer naloxone (Narcan) as prescribed (Correct answer)

Correct answer: Administer naloxone (Narcan) as prescribed

Respiratory depression with pinpoint pupils indicates opioid toxicity; naloxone is the opioid antagonist that rapidly reverses this life-threatening complication.

Question 72: What is the benefit of interdisciplinary collaboration in Orthopaedic Nurse Test practice?

It slows down decision making
It creates confusion
It is only for complex projects
It brings diverse expertise and perspectives that improve outcomes and innovation (Correct answer)

Correct answer: It brings diverse expertise and perspectives that improve outcomes and innovation

This is fundamental to Orthopaedic Nurse Test practice. It brings diverse expertise and perspectives that improve outcomes and innovation represents the professional standard for practical in the Orthopaedic Nurse Test certification framework.

Question 73: Which nerve is most at risk during anterior approach total hip arthroplasty?

Obturator nerve
Sciatic nerve
Lateral femoral cutaneous nerve (Correct answer)
Femoral nerve

Correct answer: Lateral femoral cutaneous nerve

The lateral femoral cutaneous nerve is most vulnerable during the anterior approach THA due to its proximity to the incision site, risking meralgia paresthetica.

Question 74: How should an Orthopaedic Nurse Test professional handle a situation outside their scope of competency?

Attempt it anyway
Ignore the situation
Decline all unfamiliar work
Recognize limitations and refer to or consult with appropriate specialists (Correct answer)

Correct answer: Recognize limitations and refer to or consult with appropriate specialists

This is fundamental to Orthopaedic Nurse Test practice. Recognize limitations and refer to or consult with appropriate specialists represents the professional standard for professional standards in the Orthopaedic Nurse Test certification framework.

Question 75: For a herniated cervical disk, a patient underwent a cervical discectomy. An indication of recurrent laryngeal nerve harm could be

a headache
serosanguineous drainage on the dressing
a sudden marked increase in radicular pain
hoarseness (Correct answer)

Correct answer: hoarseness

The recurrent laryngeal nerve innervates the vocal cords and is located in close proximity to the surgical field during an anterior cervical discectomy. Damage to this nerve during surgery can lead to vocal cord paralysis or dysfunction. Hoarseness is a primary symptom of recurrent laryngeal nerve injury, indicating a need for immediate assessment and intervention.

Question 76: When preparing a surgical site for orthopaedic surgery, what is the recommended skin antiseptic agent per current evidence-based guidelines?

Povidone-iodine scrub only
Saline irrigation
Chlorhexidine-alcohol solution (Correct answer)
Hydrogen peroxide

Correct answer: Chlorhexidine-alcohol solution

Chlorhexidine-alcohol is the preferred preoperative skin antiseptic per CDC surgical site infection prevention guidelines due to its superior persistent antimicrobial activity.

Question 77: Which anticoagulant is most commonly prescribed for venous thromboembolism (VTE) prophylaxis after total hip arthroplasty?

Aspirin 325 mg twice daily
Heparin (unfractionated)
Rivaroxaban (Xarelto) (Correct answer)
Clopidogrel (Plavix)

Correct answer: Rivaroxaban (Xarelto)

Rivaroxaban, a direct factor Xa inhibitor, is widely used for VTE prophylaxis after major joint replacement due to its predictable pharmacokinetics and oral route.

Question 78: What is the role of professional journals in Orthopaedic Nurse Test practice?

They disseminate current research, best practices, and professional developments (Correct answer)
They only benefit academics
They are outdated by publication time
They are optional reading

Correct answer: They disseminate current research, best practices, and professional developments

This is fundamental to Orthopaedic Nurse Test practice. They disseminate current research, best practices, and professional developments represents the professional standard for research in the Orthopaedic Nurse Test certification framework.

Question 79: A multiple myeloma patient has acquired a bone metastasis. Which kind of medical care is recommended to help avoid fractures?

Radiation
Bisphosphonates (Correct answer)
Calcium
Chemotherapy

Correct answer: Bisphosphonates

Multiple myeloma often leads to osteolytic lesions and bone metastases, significantly increasing the risk of pathological fractures. Bisphosphonates are a class of drugs that inhibit osteoclast activity, thereby reducing bone resorption and strengthening bone structure. They are commonly used to prevent and manage skeletal-related events, including fractures, in patients with bone metastases.

Question 80: Fat embolism syndrome (FES) following long bone fracture most commonly presents with which classic triad?

Fever, jaundice, and hemoptysis
Hypoxia, neurological changes, and petechial rash (Correct answer)
Bradycardia, hypertension, and cyanosis
Dyspnea, hemoptysis, and pleuritic chest pain

Correct answer: Hypoxia, neurological changes, and petechial rash

The classic fat embolism syndrome triad includes hypoxemia, neurological dysfunction (confusion), and petechial rash on the chest, axillae, and conjunctivae.

Question 81: When teaching a patient non-weight-bearing (NWB) crutch walking, the nurse instructs the patient to bear weight through which body part?

Hands and arms only (Correct answer)
Wrists
Operative foot only
Axillae (armpits)

Correct answer: Hands and arms only

Non-weight-bearing crutch walking requires all weight bearing through the hands and arms; the axillae must NOT bear weight as this causes axillary nerve damage.

Question 82: Which nursing behavior best promotes psychological safety on an orthopaedic unit?

Actively inviting input from all team members and responding non-defensively to concerns (Correct answer)
Keeping communication formal and task-focused during high-stress periods
Limiting team discussions to prevent information overload
Maintaining strict hierarchy so junior staff always defer to senior nurses

Correct answer: Actively inviting input from all team members and responding non-defensively to concerns

Psychological safety is built when team members feel their input is welcomed and that raising concerns will not lead to punishment or ridicule.

Question 83: What is reflective practice in Orthopaedic Nurse Test professional development?

Only reflecting on successes
Writing personal diaries
Avoiding past mistakes
Systematically examining experiences to gain insight and improve future practice (Correct answer)

Correct answer: Systematically examining experiences to gain insight and improve future practice

This is fundamental to Orthopaedic Nurse Test practice. Systematically examining experiences to gain insight and improve future practice represents the professional standard for practical in the Orthopaedic Nurse Test certification framework.

Question 84: How do Orthopaedic Nurse Test professionals ensure compliance in daily practice?

By memorizing all regulations
By integrating compliance requirements into standard operating procedures and regular audits (Correct answer)
Compliance is checked only annually
By hiring a compliance officer

Correct answer: By integrating compliance requirements into standard operating procedures and regular audits

This is fundamental to Orthopaedic Nurse Test practice. By integrating compliance requirements into standard operating procedures and regular audits represents the professional standard for regulatory in the Orthopaedic Nurse Test certification framework.

Question 85: Which structure separates the epiphysis from the diaphysis in growing bone and is the site of longitudinal bone growth?

Periosteum
Articular cartilage
Endosteum
Physis (growth plate) (Correct answer)

Correct answer: Physis (growth plate)

The physis, or growth plate, is the cartilaginous zone between the epiphysis and diaphysis where ossification drives longitudinal bone growth until skeletal maturity.

Question 86: A stable pelvic fracture patient is permitted to lean to one side. The nurse estimates that a patient can tilt their head a maximum of _________ degrees in any direction.

45 degrees (Correct answer)
20 degrees
10 degrees
30 degrees

Correct answer: 45 degrees

For a stable pelvic fracture, patients are typically advised to limit movement to prevent displacement or further injury to the healing bones. While some leaning is permissible to aid comfort or hygiene, a tilt of 45 degrees is generally considered the maximum safe angle. Exceeding this limit could put excessive stress on the healing pelvic bones and compromise the stability of the fracture.

Question 87: How should Orthopaedic Nurse Test professionals handle conflicts with stakeholders?

Escalate immediately to management
Ignore stakeholder concerns
Avoid all conflict
Address issues professionally through active listening, finding common ground, and seeking resolution (Correct answer)

Correct answer: Address issues professionally through active listening, finding common ground, and seeking resolution

This is fundamental to Orthopaedic Nurse Test practice. Address issues professionally through active listening, finding common ground, and seeking resolution represents the professional standard for communication in the Orthopaedic Nurse Test certification framework.

Question 88: A patient post-total knee replacement tells the nurse they feel the physiotherapist is 'pushing too hard' and causing pain. The nurse should:

Tell the patient that post-operative therapy is supposed to be uncomfortable
Assess the patient's pain, discuss findings with the physical therapist, and adjust the plan collaboratively (Correct answer)
Advise the patient to refuse therapy if it hurts too much
Report the physical therapist to nursing management

Correct answer: Assess the patient's pain, discuss findings with the physical therapist, and adjust the plan collaboratively

Assessing pain and collaborating with the PT to individualize the therapy plan addresses patient safety while maintaining interdisciplinary respect.

Question 89: The neurovascular assessment '5 Ps' for a casted extremity includes pain, pallor, pulselessness, paresthesia, and which fifth component?

Pressure
Perspiration
Petechiae
Paralysis (Correct answer)

Correct answer: Paralysis

The 5 Ps of neurovascular assessment are Pain, Pallor, Pulselessness, Paresthesia, and Paralysis, guiding early detection of vascular compromise or compartment syndrome.

Question 90: What role does data analytics play in Orthopaedic Nurse Test practice?

It replaces professional judgment
It is only for IT professionals
It supports evidence-based decision making by identifying patterns and trends in relevant data (Correct answer)
It creates unnecessary complexity

Correct answer: It supports evidence-based decision making by identifying patterns and trends in relevant data

This is fundamental to Orthopaedic Nurse Test practice. It supports evidence-based decision making by identifying patterns and trends in relevant data represents the professional standard for technology in the Orthopaedic Nurse Test certification framework.

Question 91: What is the benefit of standardized digital reporting in Orthopaedic Nurse Test practice?

It is only needed for government work
It ensures consistency, enables comparison, and facilitates regulatory compliance (Correct answer)
It limits creativity
It replaces professional communication

Correct answer: It ensures consistency, enables comparison, and facilitates regulatory compliance

This is fundamental to Orthopaedic Nurse Test practice. It ensures consistency, enables comparison, and facilitates regulatory compliance represents the professional standard for technology in the Orthopaedic Nurse Test certification framework.

Question 92: A 10-year-old girl has a 15-degree scoliosis. Which of the following therapies is best to start with?

Physical rehabilitation (Correct answer)
Surgical fusion
Milwaukee brace
Boston brace

Correct answer: Physical rehabilitation

For a 10-year-old girl with a mild 15-degree scoliosis, the initial and most appropriate treatment is typically conservative management. Physical rehabilitation, including specific exercises to strengthen core muscles and improve posture, is often recommended to prevent curve progression and manage symptoms. Bracing or surgery are usually reserved for more severe or progressing curves.

Question 93: Following arthroscopic ACL reconstruction, the nurse monitors the patient for which immediate postoperative complication most closely associated with the graft harvest site?

Donor site morbidity and pain (Correct answer)
Graft elongation
Avascular necrosis
Hardware migration

Correct answer: Donor site morbidity and pain

Donor site morbidity — pain, weakness, or numbness at the patellar tendon or hamstring harvest site — is the most immediate complication after autograft ACL reconstruction.

Question 94: The median nerve passes through which anatomical tunnel at the wrist?

Guyon's canal
Cubital tunnel
Tarsal tunnel
Carpal tunnel (Correct answer)

Correct answer: Carpal tunnel

The median nerve travels through the carpal tunnel at the wrist; compression here causes carpal tunnel syndrome.

Question 95: Which type of fracture is characterized by the bone being crushed or compressed, commonly seen in vertebral injuries?

Transverse fracture
Greenstick fracture
Compression fracture (Correct answer)
Spiral fracture

Correct answer: Compression fracture

A compression fracture occurs when bone is crushed under excessive axial force, frequently affecting vertebral bodies in osteoporotic patients.

Question 96: How should an Orthopaedic Nurse Test professional approach a novel situation not covered by standard procedures?

Follow the closest standard procedure exactly
Improvise without documentation
Apply foundational principles, assess risks, consult resources, and document the rationale for decisions (Correct answer)
Refuse to proceed

Correct answer: Apply foundational principles, assess risks, consult resources, and document the rationale for decisions

This is fundamental to Orthopaedic Nurse Test practice. Apply foundational principles, assess risks, consult resources, and document the rationale for decisions represents the professional standard for practical in the Orthopaedic Nurse Test certification framework.

Question 97: A patient with a right total hip replacement (posterior approach) is being discharged. Which adaptive equipment is most important to prevent dislocation?

Raised toilet seat (Correct answer)
Sequential compression device
Continuous ice therapy unit
Knee immobilizer brace

Correct answer: Raised toilet seat

A raised toilet seat keeps hip flexion under 90°, preventing posterior dislocation of a total hip prosthesis during the critical early recovery period.

Question 98: How should Orthopaedic Nurse Test professionals apply research findings to practice?

Implement immediately without evaluation
Only follow systematic reviews
Critically evaluate applicability, adapt to context, and monitor outcomes (Correct answer)
Ignore research that contradicts experience

Correct answer: Critically evaluate applicability, adapt to context, and monitor outcomes

This is fundamental to Orthopaedic Nurse Test practice. Critically evaluate applicability, adapt to context, and monitor outcomes represents the professional standard for research in the Orthopaedic Nurse Test certification framework.

Question 99: What is the purpose of regular risk reviews in Orthopaedic Nurse Test practice?

To satisfy auditors only
To identify new risks, evaluate control effectiveness, and update mitigation strategies (Correct answer)
To reduce workload
To generate reports

Correct answer: To identify new risks, evaluate control effectiveness, and update mitigation strategies

This is fundamental to Orthopaedic Nurse Test practice. To identify new risks, evaluate control effectiveness, and update mitigation strategies represents the professional standard for risk management in the Orthopaedic Nurse Test certification framework.

Question 100: How has digital technology transformed Orthopaedic Nurse Test practice?

It only affects large organizations
It has had no impact
It has replaced all traditional methods
It has enhanced data collection, analysis, communication, and operational efficiency (Correct answer)

Correct answer: It has enhanced data collection, analysis, communication, and operational efficiency

This is fundamental to Orthopaedic Nurse Test practice. It has enhanced data collection, analysis, communication, and operational efficiency represents the professional standard for technology in the Orthopaedic Nurse Test certification framework.

Question 101: Heterotopic ossification following total hip replacement is best detected by which diagnostic method?

Bone biopsy
MRI of the hip
CT angiogram
Plain X-ray of the pelvis (Correct answer)

Correct answer: Plain X-ray of the pelvis

Heterotopic ossification (abnormal bone formation in soft tissue around the hip) is detected on plain radiographs and graded using the Brooker classification.

Question 102: An orthopaedic nurse is preparing to communicate a critical lab value (low hemoglobin post-operatively) to the on-call physician by phone. Which approach is safest?

Ask the charge nurse to make the call
Leave a voicemail with the lab value and await callback
Use SBAR, read back orders received, and document the call with time, recipient, and response (Correct answer)
Text the value to the physician and document it was sent

Correct answer: Use SBAR, read back orders received, and document the call with time, recipient, and response

Structured SBAR communication with read-back verification and documentation is the standard for safe critical value communication.

Question 103: The 'unhappy triad' knee injury involves damage to which three structures?

PCL, LCL, and lateral meniscus
ACL, PCL, and lateral meniscus
ACL, MCL, and medial meniscus (Correct answer)
MCL, LCL, and ACL

Correct answer: ACL, MCL, and medial meniscus

The unhappy triad (O'Donoghue triad) involves simultaneous injury to the ACL, MCL, and medial meniscus, typically from a valgus force to the knee.

Question 104: How should Orthopaedic Nurse Test professionals evaluate new technology tools?

Adopt all new technology immediately
Avoid all new technology
Assess functionality, reliability, security, cost-effectiveness, and alignment with professional needs (Correct answer)
Wait until competitors adopt first

Correct answer: Assess functionality, reliability, security, cost-effectiveness, and alignment with professional needs

This is fundamental to Orthopaedic Nurse Test practice. Assess functionality, reliability, security, cost-effectiveness, and alignment with professional needs represents the professional standard for technology in the Orthopaedic Nurse Test certification framework.

Question 105: Which period of the bone healing process allows the patient to resume bearing weight?

Development of fibrocartilaginous (soft) callus
Development of bony callus
Remodeling (Correct answer)
Inflammatory stage

Correct answer: Remodeling

Bone healing occurs in several stages, with remodeling being the final phase. During remodeling, the woven bone of the callus is gradually replaced by stronger lamellar bone, and the bone regains its original shape and strength. It is during this stage, once sufficient strength is achieved and confirmed by imaging, that the patient can safely resume bearing weight on the healed limb, often under medical guidance.

Question 106: Which surgical technique for total knee arthroplasty involves cutting the femoral component to restore the natural rotation of the joint?

Unicompartmental technique
Cruciate-retaining technique
Gap balancing technique
Measured resection technique (Correct answer)

Correct answer: Measured resection technique

The measured resection technique uses anatomical landmarks to guide bone cuts in TKA, aiming to recreate the patient's natural joint line and rotation.

Question 107: How does a Orthopaedic Nurse Test professional communicate risks to stakeholders?

Through annual reports only
Using technical jargon only
By minimizing all risks
By presenting risks clearly with context, potential impacts, and recommended actions (Correct answer)

Correct answer: By presenting risks clearly with context, potential impacts, and recommended actions

This is fundamental to Orthopaedic Nurse Test practice. By presenting risks clearly with context, potential impacts, and recommended actions represents the professional standard for risk management in the Orthopaedic Nurse Test certification framework.

Question 108: Why is documentation important in Orthopaedic Nurse Test risk management?

It is optional paperwork
It only benefits legal teams
It creates an audit trail, supports decision-making, and demonstrates due diligence (Correct answer)
It slows down operations

Correct answer: It creates an audit trail, supports decision-making, and demonstrates due diligence

This is fundamental to Orthopaedic Nurse Test practice. It creates an audit trail, supports decision-making, and demonstrates due diligence represents the professional standard for risk management in the Orthopaedic Nurse Test certification framework.

Question 109: Osteomyelitis in the right knee and distal femur of a 48-year-old patient. Which of the ROM exercises for the right leg should the patient be instructed to perform?

ROM exercises of the right knee
ROM exercises of the right hip and ankle (Correct answer)
ROM exercises of the right ankle
No exercises as the limb should rest

Correct answer: ROM exercises of the right hip and ankle

In osteomyelitis of the knee and distal femur, the infected area needs to be immobilized and rested to promote healing and prevent further spread of infection. However, to prevent stiffness and maintain mobility in adjacent joints, range-of-motion (ROM) exercises should be performed on the unaffected joints, such as the hip and ankle, to preserve their function and prevent complications like contractures.

Question 110: A patient is upset because they were not informed about a change in their surgery time. The nurse's best initial response is to:

Apologize for the lapse in communication, provide current accurate information, and address the patient's immediate concerns (Correct answer)
Investigate who failed to notify the patient before responding
Redirect the patient's frustration toward the scheduling department
Explain that scheduling changes are common and unavoidable

Correct answer: Apologize for the lapse in communication, provide current accurate information, and address the patient's immediate concerns

Acknowledging the failure, apologizing, and correcting the information gap immediately restores trust and addresses the patient's immediate need.

Question 111: Why is evidence-based practice important in Orthopaedic Nurse Test?

It integrates best available evidence with professional expertise for optimal outcomes (Correct answer)
It only applies to academic settings
It replaces experience
It is a theoretical concept only

Correct answer: It integrates best available evidence with professional expertise for optimal outcomes

This is fundamental to Orthopaedic Nurse Test practice. It integrates best available evidence with professional expertise for optimal outcomes represents the professional standard for research in the Orthopaedic Nurse Test certification framework.

Question 112: Which nutritional element is most important to support bone healing following an orthopaedic fracture?

Vitamin C and iron
Zinc and Vitamin B12
Magnesium and potassium
Calcium and Vitamin D (Correct answer)

Correct answer: Calcium and Vitamin D

Calcium provides the mineral matrix for bone healing while Vitamin D facilitates calcium absorption; both are essential for fracture repair and bone remodeling.

Question 113: The menisci of the knee serve which primary function?

Produce synovial fluid
Prevent posterior tibial displacement
Absorb shock and distribute load across the knee joint (Correct answer)
Connect the femur to the tibia

Correct answer: Absorb shock and distribute load across the knee joint

The medial and lateral menisci act as shock absorbers and load distributors, reducing stress on articular cartilage within the knee joint.

Question 114: How do Orthopaedic Nurse Test professionals contribute to advancing their field?

By maintaining current practices
By conducting research, sharing outcomes, mentoring others, and participating in professional forums (Correct answer)
Individual contribution is not possible
By competing with colleagues

Correct answer: By conducting research, sharing outcomes, mentoring others, and participating in professional forums

This is fundamental to Orthopaedic Nurse Test practice. By conducting research, sharing outcomes, mentoring others, and participating in professional forums represents the professional standard for research in the Orthopaedic Nurse Test certification framework.

Question 115: The Lachman test is used to assess the integrity of which structure?

Posterior cruciate ligament
Lateral meniscus
Anterior cruciate ligament (Correct answer)
Medial collateral ligament

Correct answer: Anterior cruciate ligament

The Lachman test evaluates anterior cruciate ligament (ACL) integrity by assessing anterior tibial translation with the knee at 20–30° of flexion.

Question 116: What role does peer review play in Orthopaedic Nurse Test practice?

It is only for beginners
It creates unnecessary competition
It replaces formal certification
It provides quality assurance and professional development through collegial evaluation (Correct answer)

Correct answer: It provides quality assurance and professional development through collegial evaluation

This is fundamental to Orthopaedic Nurse Test practice. It provides quality assurance and professional development through collegial evaluation represents the professional standard for professional standards in the Orthopaedic Nurse Test certification framework.

Question 117: What distinguishes quality assurance from quality control in Orthopaedic Nurse Test practice?

QC is more important than QA
QA applies only to manufacturing
QA focuses on preventing defects through process improvement while QC detects defects through inspection (Correct answer)
They are identical concepts

Correct answer: QA focuses on preventing defects through process improvement while QC detects defects through inspection

This is fundamental to Orthopaedic Nurse Test practice. QA focuses on preventing defects through process improvement while QC detects defects through inspection represents the professional standard for quality in the Orthopaedic Nurse Test certification framework.

Question 118: How do continuing education requirements benefit Orthopaedic Nurse Test certified professionals?

They ensure professionals stay current with evolving industry practices and knowledge (Correct answer)
They reduce practical skills
They are unnecessary formalities
They only benefit training providers

Correct answer: They ensure professionals stay current with evolving industry practices and knowledge

This is fundamental to Orthopaedic Nurse Test practice. They ensure professionals stay current with evolving industry practices and knowledge represents the professional standard for professional standards in the Orthopaedic Nurse Test certification framework.

Question 119: What is the importance of data security in Orthopaedic Nurse Test digital applications?

Protecting sensitive information from unauthorized access, breaches, and loss is essential (Correct answer)
Security is unnecessary for professional data
Only financial data needs protection
Security slows down work

Correct answer: Protecting sensitive information from unauthorized access, breaches, and loss is essential

This is fundamental to Orthopaedic Nurse Test practice. Protecting sensitive information from unauthorized access, breaches, and loss is essential represents the professional standard for technology in the Orthopaedic Nurse Test certification framework.

Question 120: A kid with achondroplasia experiences numbness, sleep apnea, widespread weakness, urine and fecal incontinence, and rapid reflexes. Which of the following complications needs to be evaluated at the beginning for the child?

Spinal cord myelopathy
Hydrocephalus
Chronic otitis media
Cervicomedullary compression (Correct answer)

Correct answer: Cervicomedullary compression

Achondroplasia often leads to a narrowed foramen magnum, the opening at the base of the skull. This narrowing can cause compression of the cervicomedullary junction, where the brainstem meets the spinal cord. The described symptoms (numbness, sleep apnea, weakness, incontinence, rapid reflexes) are classic signs of neurological compression at this critical area, requiring urgent evaluation to prevent severe neurological damage.

Question 121: How do Orthopaedic Nurse Test professionals establish measurable quality objectives?

By comparing to competitors only
Through subjective assessment
Using vague goals
By defining specific, measurable, achievable, relevant, and time-bound quality targets (Correct answer)

Correct answer: By defining specific, measurable, achievable, relevant, and time-bound quality targets

This is fundamental to Orthopaedic Nurse Test practice. By defining specific, measurable, achievable, relevant, and time-bound quality targets represents the professional standard for quality in the Orthopaedic Nurse Test certification framework.

Question 122: A patient who had an ORIF (open reduction internal fixation) of the femur develops a fever on postoperative day 3. What is the most common cause at this stage?

Pulmonary embolism
Surgical site infection
Deep vein thrombosis
Atelectasis (Correct answer)

Correct answer: Atelectasis

Fever on postoperative days 1–3 is most commonly caused by atelectasis due to shallow breathing; infection typically presents after day 5.

Question 123: The right foot is polydactyl when a baby is born, although there is no bone involvement. The best course of action at this time would be

tie off the extra digit with a silk suture or vascular clip (Correct answer)
surgery to remove the extra digit
clip off the extra digit as there is no bony involvement
no treatment at this time

Correct answer: tie off the extra digit with a silk suture or vascular clip

When a polydactyl digit (extra digit) has no bone involvement, it is typically a soft tissue tag. Tying off the digit at its base with a silk suture or vascular clip restricts blood flow, causing the tissue to necrose and fall off naturally within a few days or weeks. This is a simple, non-surgical procedure that avoids the risks associated with surgical excision for a non-bony appendage.

Question 124: Which functional outcome tool is most commonly used to assess patient outcomes following total knee arthroplasty in the US?

Lysholm Knee Scale
Harris Hip Score
DASH (Disabilities of the Arm, Shoulder and Hand)
KOOS (Knee injury and Osteoarthritis Outcome Score) (Correct answer)

Correct answer: KOOS (Knee injury and Osteoarthritis Outcome Score)

The KOOS (Knee injury and Osteoarthritis Outcome Score) is widely used to assess patient-reported outcomes including pain, function, and quality of life after TKA.

Question 125: What is the most crucial course of action when an osteoarthritic joint experiences noticeably increased pain and inflammation?

Taking antibiotics
Doing range-of-motion exercises
Taking nonsteroidal anti-inflammatory drugs
Resting the joint (Correct answer)

Correct answer: Resting the joint

When an osteoarthritic joint experiences significantly increased pain and inflammation, it indicates an exacerbation of the condition, often due to overuse or stress. Resting the joint helps to reduce mechanical stress, decrease inflammation, and alleviate pain. While other treatments may follow, initial rest is crucial to calm the acute flare-up and prevent further irritation.

Question 126: When educating a patient about cast care at home, the nurse emphasizes which instruction to prevent skin breakdown?

Apply lotion daily around the cast edges
Loosen cast padding if swelling increases
Keep the cast dry and avoid inserting objects inside (Correct answer)
Insert a pencil under the cast to scratch itching skin

Correct answer: Keep the cast dry and avoid inserting objects inside

Patients must keep casts dry and must never insert objects inside to scratch, as this causes skin injury and infection in an area that cannot be directly inspected.

Question 127: Compartment syndrome is best confirmed by which assessment finding?

Moderate swelling with intact distal pulses
Pain out of proportion to injury with pain on passive stretch (Correct answer)
Skin pallor over the affected limb
Patient report of numbness only

Correct answer: Pain out of proportion to injury with pain on passive stretch

The hallmark signs of acute compartment syndrome are pain disproportionate to the injury and pain elicited by passive stretch of muscles in the affected compartment.

Question 128: What distinguishes a peer-reviewed study in Orthopaedic Nurse Test literature?

It was written by multiple authors
It was published quickly
Independent experts in the field evaluated the methodology and conclusions before publication (Correct answer)
It was published in any format

Correct answer: Independent experts in the field evaluated the methodology and conclusions before publication

This is fundamental to Orthopaedic Nurse Test practice. Independent experts in the field evaluated the methodology and conclusions before publication represents the professional standard for research in the Orthopaedic Nurse Test certification framework.

Question 129: What is the value of written documentation in Orthopaedic Nurse Test professional communication?

It is only for formal occasions
It replaces verbal communication
It creates permanent records, ensures clarity, and provides legal protection (Correct answer)
It is optional

Correct answer: It creates permanent records, ensures clarity, and provides legal protection

This is fundamental to Orthopaedic Nurse Test practice. It creates permanent records, ensures clarity, and provides legal protection represents the professional standard for communication in the Orthopaedic Nurse Test certification framework.

Question 130: A distal femoral osteosarcoma patient will undergo limb-salvage surgery. How long will the patient need to go through physical therapy to learn to walk on the saved limb?

12 months (Correct answer)
3 months
6 weeks
6 months

Correct answer: 12 months

Limb-salvage surgery for osteosarcoma is a complex procedure involving significant bone and tissue reconstruction. The rehabilitation process is extensive, requiring patients to regain strength, range of motion, and learn to bear weight on the reconstructed limb. A full year of dedicated physical therapy is often necessary to achieve optimal functional recovery and independence in walking.

Question 131: What is the significance of a code of conduct for Orthopaedic Nurse Test professionals?

It applies only to new practitioners
It establishes expected behaviors and ethical standards that protect the public and profession (Correct answer)
It is merely symbolic
It limits professional freedom

Correct answer: It establishes expected behaviors and ethical standards that protect the public and profession

This is fundamental to Orthopaedic Nurse Test practice. It establishes expected behaviors and ethical standards that protect the public and profession represents the professional standard for professional standards in the Orthopaedic Nurse Test certification framework.

Question 132: How should Orthopaedic Nurse Test professionals stay current with regulatory changes?

Wait until audited
Rely on colleagues for updates
Regulations rarely change
Monitor regulatory updates, participate in professional associations, and attend continuing education (Correct answer)

Correct answer: Monitor regulatory updates, participate in professional associations, and attend continuing education

This is fundamental to Orthopaedic Nurse Test practice. Monitor regulatory updates, participate in professional associations, and attend continuing education represents the professional standard for regulatory in the Orthopaedic Nurse Test certification framework.

Question 133: What is the primary competency framework for Orthopaedic Nurse Test professionals?

Employer-specific requirements only
Structured competency standards defined by the certifying body (Correct answer)
Ad-hoc skill development
Self-assessed capabilities only

Correct answer: Structured competency standards defined by the certifying body

This is fundamental to Orthopaedic Nurse Test practice. Structured competency standards defined by the certifying body represents the professional standard for professional standards in the Orthopaedic Nurse Test certification framework.

Question 134: Which complication is specifically associated with prolonged use of a tight plaster cast on a limb?

Osteomyelitis
Fat embolism
Compartment syndrome (Correct answer)
Avascular necrosis

Correct answer: Compartment syndrome

A cast that is too tight can impede circulation and increase compartmental pressure, leading to acute compartment syndrome if not recognized and treated promptly.

Question 135: How should an Orthopaedic Nurse Test professional respond to a compliance violation?

Wait for an external audit to find it
Report it promptly, investigate the root cause, and implement corrective actions (Correct answer)
Blame the regulatory framework
Conceal it if minor

Correct answer: Report it promptly, investigate the root cause, and implement corrective actions

This is fundamental to Orthopaedic Nurse Test practice. Report it promptly, investigate the root cause, and implement corrective actions represents the professional standard for regulatory in the Orthopaedic Nurse Test certification framework.

Question 136: Which ligament of the knee prevents anterior displacement of the tibia on the femur?

Medial collateral ligament
Anterior cruciate ligament (Correct answer)
Posterior cruciate ligament
Lateral collateral ligament

Correct answer: Anterior cruciate ligament

The anterior cruciate ligament (ACL) resists anterior tibial translation and rotational forces, making it a critical stabilizer of the knee.

Orthopaedic Nurse Certified (ONC) Exam

The ONC exam, administered by the Orthopaedic Nurses Certification Board (ONCB), validates a registered nurse's specialized knowledge in orthopaedic care including musculoskeletal conditions, surgical procedures, pain management, and patient rehabilitation.

Questions

35 min

Time Limit

72%

To Pass

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Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds

These practice questions were written with AI tools. They are not real exam questions. Exam facts are checked against the official sources listed below. Not reviewed by a subject-matter expert. Editorial policy

Sources & references

Exam facts on this page (fees, format, dates, passing scores) are checked against these official sources; the date is our last check. Editorial policy

practicetest.meazurelearning.com — Test dates · verified Oct 2026
oncb.org — Test delivery, test dates · verified Oct 2026