CTO Study Guide 2026
Everything you need to pass the CTO 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.
CTO exam key facts
- The ABC Orthotic Technician exam consists of 125 multiple-choice questions. Source
- Candidates are granted four attempts to pass the ABC Orthotic Technician exam within their three-year eligibility period. Source
- The ABC Certified Orthotic Technician credential follows a five-year cycle requiring 30 continuing education credits. Source
📋 CTO Exam Format at a Glance
📚 CTO Topics to Study (31)
✍️ Sample CTO Questions & Answers
1. Which measurement is most important when sizing a prefabricated wrist orthosis?
Wrist circumference is the primary sizing parameter used by most prefabricated orthosis manufacturers to ensure proper fit and support.
2. Which thermoplastic material is most appropriate for fabricating a rigid ankle-foot orthosis (AFO) requiring high durability and resistance to deformation under load?
Polypropylene is the standard rigid thermoplastic for AFOs due to its high durability, stiffness, and resistance to deformation under body weight.
3. Which scenario represents a violation of the Certified Orthotic Technician code of professional conduct?
Misrepresenting qualifications is a serious violation that undermines public trust.
4. A pediatric patient with cerebral palsy wearing a solid AFO develops a pressure sore over the navicular. The MOST appropriate immediate intervention is:
Spot heating and relieving (bubbling out) the thermoplastic shell over the navicular removes direct pressure at the source of the wound.
5. Which muscle group is primarily responsible for controlling the rate of foot drop during the loading response phase?
The tibialis anterior eccentrically contracts during loading response to control the rate at which the foot lowers to the ground.
6. Which nerve injury would most likely require a low-profile dynamic MCP extension orthosis?
Radial nerve injury at the spiral groove causes wrist drop and loss of MCP extension, requiring a dynamic orthosis to restore that function.
🎯 Free CTO Practice Tests
📖 CTO Guides & Articles
What Practice Test Geeks adds beyond an AI chat for CTO
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 CTO mock exam — 150 questions in 180 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 CTO 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 CTO cheat sheet you can print or save as a PDF.
- CTO flashcards built from the same question bank.
- Free CTO 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
- abcop.org — Score release, test delivery, registration deadline, renewal, retake fee, test dates, score validity, retake policy, eligibility, exam format · verified Oct 2026