CO Study Guide 2026

Everything you need to pass the CO exam in one place: the exam format, every topic to study, real practice questions with explanations, flashcards, and full-length practice tests. Free, no sign-up needed.

📋 CO Exam Format at a Glance

200
Questions
210 min
Time Limit
75.00%
Passing Score

📚 CO Topics to Study (40)

Anatomy, Biomechanics & Pathophysiology of the Musculoskeletal System · 9 cardsEthics, Safety Standards & Clinical Documentation · 9 cardsOrthotic Assessment, Prescription & Device Design · 9 cardsPatient Care, Fitting & Follow-Up Procedures · 9 cardsAnatomy, Biomechanics & Pathophysiology of the Musculoskeletal System · 7 cardsAnatomy, Biomechanics & Pathophysiology of the Musculoskeletal System · 7 cardsAnatomy, Biomechanics & Pathophysiology of the Musculoskeletal System · 7 cardsAnatomy, Biomechanics & Pathophysiology of the Musculoskeletal System · 7 cardsEthics, Safety Standards & Clinical Documentation · 7 cardsEthics, Safety Standards & Clinical Documentation · 7 cardsEthics, Safety Standards & Clinical Documentation · 7 cardsEthics, Safety Standards & Clinical Documentation · 7 cardsGait Analysis & Lower Extremity Biomechanics · 7 cardsGait Analysis & Lower Extremity Biomechanics · 7 cardsGait Analysis & Lower Extremity Biomechanics · 7 cardsOrthotic Assessment, Prescription & Device Design · 7 cardsOrthotic Assessment, Prescription & Device Design · 7 cardsOrthotic Assessment, Prescription & Device Design · 7 cardsOrthotic Assessment, Prescription & Device Design · 7 cardsPatient Care, Fitting & Follow-Up Procedures · 7 cardsPatient Care, Fitting & Follow-Up Procedures · 7 cardsPatient Care, Fitting & Follow-Up Procedures · 7 cardsPatient Care, Fitting & Follow-Up Procedures · 7 cardsClinical Documentation & Records · 6 cardsCO Business Operations & Practice Management · 6 cardsCO Business Operations & Practice Management · 6 cardsCO Business Operations & Practice Management · 6 cardsCO Materials Science & Fabrication Techniques · 6 cardsCO Materials Science & Fabrication Techniques · 6 cardsCO Materials Science & Fabrication Techniques · 6 cards

✍️ Sample CO Questions & Answers

1. What is the importance of continuing education for CO professionals in Pharmacology & Medication Management?
Maintaining current knowledge and adapting to industry changes

Continuing education keeps professionals current with developments and best practices while meeting certification requirements.

2. Which rivet or fastener type is most appropriate for attaching metal uprights to a leather orthotic foundation to allow articulation?
Chicago screw (sex bolt)

Chicago screws (sex bolts) are ideal for orthotic joints because they can be tightened to control resistance to motion and can be replaced if worn, unlike solid rivets.

3. A patient with spastic cerebral palsy is being fitted with a solid AFO. To accommodate plantarflexor spasticity during dorsiflexion ROM assessment, the orthotist should test ROM with the knee:
In full extension to include the effect of the biarticular gastrocnemius

Testing with the knee in full extension engages the biarticular gastrocnemius, revealing the true available dorsiflexion range under tension that the AFO must accommodate.

4. An orthotist suspects a colleague is billing for orthotic services that were never provided. The appropriate first step is to:
Report the suspicion through proper internal compliance channels or to the appropriate regulatory authority

Suspected fraudulent billing must be reported through the practice's compliance officer or to regulators such as the OIG, as failing to report known fraud may itself constitute a violation.

5. A patient with a workers' compensation claim asks the orthotist not to document a prior similar injury that may affect their case. The orthotist should:
Document all clinically relevant findings accurately and completely regardless of the patient's request

Accurate and complete documentation is both an ethical and legal obligation; omitting clinically relevant information constitutes falsification of medical records.

6. Peripheral arterial disease (PAD) is relevant to orthotists because it increases risk of:
Pressure ulcers and poor wound healing under orthotic contact areas

PAD reduces tissue perfusion, making skin vulnerable to ischemic breakdown under orthotic pressure points, necessitating careful pressure management and monitoring.

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Your CO Study Path
1. Learn with Flashcards → 2. Drill Practice Tests → 3. Take the Full Exam Simulation
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