CNA Assisting with Range of Motion Exercises 2 — Questions and Answers

Question 1: What is the primary purpose of performing range of motion (ROM) exercises for bedridden residents?

To prevent joint contractures and maintain muscle flexibility (Correct answer)
To build muscle strength for independent walking
To check vital signs during movement
To stimulate the resident's appetite

Correct answer: To prevent joint contractures and maintain muscle flexibility

ROM exercises prevent contractures (permanent shortening of muscles and joints), maintain flexibility, promote circulation, and help preserve a resident's functional ability.

When joints are not moved through their full range regularly, muscles and connective tissues shorten and stiffen. This leads to contractures — a permanent tightening that limits movement and causes pain. Contractures can make personal care (such as bathing and dressing) very difficult and increase the risk of pressure injuries. Range of motion exercises counter these effects by keeping joints mobile, stimulating blood flow to extremities, reducing the risk of deep vein thrombosis (DVT), and maintaining skin integrity over bony prominences. ROM also helps preserve neurological pathways for movement. CNAs perform passive ROM (the CNA moves the limb) when the resident cannot move independently, assisted ROM (resident and CNA move together), and may encourage active ROM (resident moves independently). All ROM should follow the care plan and be performed within the resident's pain-free range. The nurse should be informed of any increased stiffness, pain, or new limitations observed during ROM.

Question 2: During passive ROM exercises, what should the CNA do if a resident reports pain when a joint is moved?

Stop the movement immediately and notify the nurse (Correct answer)
Continue past the pain because stretching is beneficial
Reduce speed but continue through the full range
Document the pain and complete the exercises later

Correct answer: Stop the movement immediately and notify the nurse

If a resident reports pain during ROM exercises, the CNA must stop immediately and report to the nurse. Pain signals possible injury, inflammation, or a joint problem that needs clinical assessment.

ROM exercises should always be performed within the resident's pain-free range. Pain is the body's signal that something is wrong — continuing to move a painful joint can cause injury, worsen inflammation, or damage already compromised structures such as tendons, ligaments, or arthritic joints. CNAs should never push joints beyond comfortable resistance. A 'no pain, no gain' approach is never appropriate in resident care. The CNA should stop the exercise, gently return the limb to a neutral position, reassure the resident, and promptly inform the charge nurse. The nurse will assess the joint, review the care plan, and determine whether the ROM should be modified, referred to physical therapy, or temporarily discontinued. Documentation of what happened, what the resident reported, and the nurse notification is essential. Subsequent ROM sessions should respect any updated care plan instructions regarding that joint or movement direction.

Question 3: Which movement describes bending a joint to decrease the angle between two body parts (e.g., bending the elbow)?

Flexion (Correct answer)
Extension
Abduction
Rotation

Correct answer: Flexion

Flexion decreases the angle of a joint, bringing body parts closer together. Extension is the opposite — it straightens or increases the joint angle.

Understanding ROM terminology helps CNAs follow care plan instructions and communicate accurately with the nursing team: - Flexion: bending a joint, decreasing the angle (elbow bending, knee bending, bringing chin to chest) - Extension: straightening a joint, increasing the angle (straightening the arm after flexion) - Hyperextension: moving beyond neutral extension (tilting the head backward) - Abduction: moving a limb away from the midline of the body (raising the arm to the side) - Adduction: moving a limb toward the midline (bringing the arm back down to the side) - Rotation: turning a body part around its own axis (turning the head side to side) - Pronation/Supination: rotating the forearm so the palm faces down (pronation) or up (supination) - Circumduction: circular movement at a ball-and-socket joint (shoulder or hip) CNAs should be familiar with these terms to follow therapist instructions correctly and describe joint movements accurately when reporting to nurses.

Question 4: How should a CNA support a resident's limb during passive ROM exercises?

By supporting both above and below the joint being exercised (Correct answer)
By holding only the distal end of the extremity
By allowing the limb to hang freely during movement
By gripping the joint itself firmly to stabilize it

Correct answer: By supporting both above and below the joint being exercised

The CNA should support the limb both proximal (above) and distal (below) to the joint being moved. This prevents injury and ensures controlled, safe movement.

Proper limb support during ROM is essential for resident safety and comfort. Supporting only the distal end (such as holding just the hand while moving the elbow) places excessive stress on the joint and can cause strain or injury. Gripping the joint directly can compress sensitive structures and cause pain. The correct technique is to place one hand just above the joint and one hand just below it (or to cup the hand/foot distally while supporting proximally). This distributes the weight of the limb, allows the CNA to feel resistance or crepitus (grinding sensation), and provides controlled, smooth movement. CNAs should move each joint slowly and smoothly — never jerking or forcing movement. They should watch the resident's face for signs of pain or discomfort throughout the exercise. When completing ROM, the limb should be returned to a comfortable, neutral position. Starting with large proximal joints (shoulder, hip) before smaller distal joints (wrist, ankle) is generally recommended.

Question 5: A resident has right-sided weakness from a stroke. When performing ROM on the right arm, the CNA should:

Move each joint slowly through its full range, supporting the limb throughout (Correct answer)
Skip the right arm because it is paralyzed and ROM is not needed
Have the resident do all the work independently to rebuild strength
Use forceful stretching to overcome the weakness

Correct answer: Move each joint slowly through its full range, supporting the limb throughout

A weakened or paralyzed limb needs passive ROM to prevent contractures, maintain circulation, and preserve joint integrity. The CNA moves the limb carefully through its full range.

Stroke survivors often have hemiplegia or hemiparesis (weakness or paralysis on one side). The affected side cannot generate voluntary movement and is highly vulnerable to contractures if not exercised regularly. Passive ROM is critical for maintaining joint health in the affected extremity. The CNA should perform passive ROM on the affected side by supporting the limb properly and moving each joint through its full, pain-free range. Common joints addressed include shoulder (flexion, extension, abduction, adduction, rotation), elbow (flexion, extension), wrist (flexion, extension, rotation), fingers and thumb, hip (flexion, extension, abduction, adduction), knee (flexion, extension), ankle (dorsiflexion, plantar flexion), and toes. Forceful stretching can cause micro-tears in spastic muscles and worsen pain and injury. The care plan from occupational or physical therapy should guide the frequency, extent, and type of ROM exercises. CNAs should communicate any changes — such as increased spasticity, new swelling, or skin breakdown over joint areas — to the nurse promptly.

Question 6: How many times should each joint movement typically be performed during a ROM exercise session?

3 to 5 times per movement (Correct answer)
Once is sufficient for maintenance
10 to 15 times to maximize benefit
As many times as the CNA feels is needed

Correct answer: 3 to 5 times per movement

Standard practice is to repeat each joint movement 3 to 5 times during each ROM session. This is sufficient to maintain joint mobility without causing fatigue or injury.

Performing ROM 3 to 5 times per movement per session is the widely accepted guideline in most nursing assistant curricula and clinical settings. This range provides adequate stimulation of the joint, surrounding muscles, and circulation without overexerting frail or elderly residents. The exact frequency and number of repetitions for an individual resident should always follow the care plan, which is informed by the physician's orders and guidance from physical or occupational therapy. Some residents with specific conditions may have modified instructions (e.g., fewer repetitions due to arthritis pain, or more if prescribed by therapy). CNAs should perform ROM sessions as scheduled — typically once or twice daily — and should not substitute ROM sessions with less frequent, more aggressive sessions. Consistent, regular gentle movement is more therapeutic and less injurious than sporadic intensive stretching. Always document ROM completion and note any concerns observed during the session.

CNA Assisting with Range of Motion Exercises 2

What is the primary purpose of performing range of motion (ROM) exercises for bedridden residents?