COF Study Guide 2026
Everything you need to pass the COF 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.
📋 COF Exam Format at a Glance
📚 COF Topics to Study (48)
✍️ Sample COF Questions & Answers
1. Which skeletal maturity indicator is used to determine when bracing for adolescent idiopathic scoliosis can be safely discontinued?
The Risser sign grades iliac apophysis ossification from 0 to 5; grades 4 and 5 indicate skeletal maturity, signifying that spinal growth has ceased and the risk of scoliosis progression is minimal, allowing bracing to be discontinued.
2. A 4-year-old with myelomeningocele at L3–L4 has active hip flexors and quadriceps but no ankle control. What is the most likely appropriate orthosis?
With preserved quadriceps and hip flexors but absent ankle musculature, an AFO providing ankle-foot control while allowing knee function is most appropriate.
3. A patient with a spastic equinovarus foot in cerebral palsy would most likely exhibit which gait deviation during swing phase?
Spastic equinovarus causes foot clearance problems during swing, leading patients to compensate with steppage gait, vaulting on the stance limb, or circumduction of the affected limb.
4. In a child with spastic diplegic cerebral palsy, the PRIMARY goal of AFO prescription is to:
AFOs for children with cerebral palsy are prescribed to normalize gait kinematics, reduce energy expenditure, and maximize functional independence in mobility.
5. An orthotist discovers that a colleague has been billing Medicare for custom orthoses but delivering prefabricated devices. The orthotist's primary ethical obligation is to:
Suspected Medicare fraud must be reported to authorities such as the OIG or CMS, as failure to report known fraud may constitute complicity.
6. Which of the following activities would constitute a violation of patient confidentiality by an orthotic fitter?
Sharing patient images or videos on social media without explicit written authorization is a HIPAA violation and breach of confidentiality.
🎯 Free COF Practice Tests
📖 COF Guides & Articles
What Practice Test Geeks adds beyond an AI chat for COF
An AI chatbot can quiz you, but it can't reproduce the exam conditions or keep your record. Here you get:
- A timed, full-length COF mock exam — 100 questions in 120 minutes with a 70% pass mark, modeled on the official exam's question count and time limit, followed by a score report broken down by exam domain.
- A fixed COF question bank: the same test every attempt, so your score is comparable from one try to the next instead of changing with every regenerated quiz.
- Progress saved on your device: completed tests, scores and missed questions stay in My Progress, so you can retake only what you got wrong.
- A printable COF cheat sheet you can print or save as a PDF.
- COF flashcards built from the same question bank.
- Free COF practice tests with the correct answer shown after each question.
How this page was made: written with AI tools and published by Nathan Beja, founder of Practice Test Geeks, who is responsible for its content. 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
- bocusa.org — Registration deadline, retake policy, score release, score validity, retake fee, fees, test delivery, test dates · verified Oct 2026