100+ Free CPA Practice Questions
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Lamination of a definitive socket commonly uses which reinforcement?
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Key Facts: CPA Exam
165
Total Items
ABC CPA
3 hrs
Exam Time
ABC
$240
Exam Fee
ABC (+$135 application)
500 hrs
Clinical Required
Prosthetic supervised
ABC CPA is the assistant-level prosthetic credential. 165 items, 3 hours, $240 exam fee. Master amputation levels (TT BK / TF AK / Syme), K0-K4 Medicare functional levels, socket designs (TSB, PTB, ischial containment), suspension types (suction, pin lock with silicone liner), knee unit hierarchy (single-axis → polycentric → microprocessor C-Leg/Genium), and energy expenditure (TT 9-25%, TF 65-100%).
Sample CPA Practice Questions
Try these sample questions to test your CPA exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.
1Which abbreviation refers to a below-knee amputation level?
2A partial foot amputation through the tarsometatarsal joints is called what?
3The primary blood supply to the lower extremity below the inguinal ligament originates from which artery?
4Which dermatome covers the medial aspect of the leg below the knee?
5Which muscle, when severed at transtibial level, contributes most to the bulbous distal end of the residual limb when myodesis is performed?
6Which bony landmark is used as a primary weight-bearing structure in the patellar tendon bearing (PTB) socket?
7Which structure must be relieved in a transtibial socket to prevent peroneal nerve compression?
8The ischial tuberosity is the primary weight-bearing structure in which socket design?
9Which muscle is most affected in a transfemoral amputation, leading to typical abductor weakness and Trendelenburg-type gait?
10Which bone forms the distal weight-bearing surface in a Syme's amputation?
About the CPA Exam
ABC assistant-level prosthetic credential — supports a CP/CPO with residual limb assessment, socket fitting, suspension fitting, alignment checks, and patient education. Covers anatomy and amputation levels (TT, TF, Syme, knee/hip disart), prosthetic biomechanics and gait, K-level functional classification, sockets/suspension/knees/feet components, microprocessor knees (C-Leg/Genium), pathology (vascular vs trauma vs cancer amputation), and ABC ethics/scope.
Questions
165 scored questions
Time Limit
3 hours
Passing Score
Scaled (ABC-set)
Exam Fee
$240 exam (ABC)
CPA Exam Content Outline
Prosthetic Design & Components
Sockets (TSB, PTB, ischial containment), suspension, knees, feet, alignment hardware
Biomechanics & Gait
Prosthetic gait, ground reaction force, gait deviations (whips, vaulting, circumduction)
Anatomy & Residual Limb
Amputation levels TT/TF/Syme/Lisfranc, residual limb anatomy, vascular
Prosthetic Assessment
Patient assessment, K-levels (K0-K4), residual limb, fit evaluation
Pathology & Amputation Etiology
Vascular (most common), trauma, cancer, congenital, peds, stump care
Materials & Fabrication
Silicone liners, lamination, foams, sock plies (~1mm/ply)
Ethics & Practice
ABC code of ethics, scope, HIPAA, SOAP documentation
How to Pass the CPA Exam
What You Need to Know
- Passing score: Scaled (ABC-set)
- Exam length: 165 questions
- Time limit: 3 hours
- Exam fee: $240 exam
Keys to Passing
- Complete 500+ practice questions
- Score 80%+ consistently before scheduling
- Focus on highest-weighted sections
- Use our AI tutor for tough concepts
CPA Study Tips from Top Performers
Frequently Asked Questions
What are Medicare K-levels?
K-levels (K0-K4) are Medicare functional classification levels for lower-limb prosthetic prescription. K0: no ambulation potential — wheelchair only. K1: household ambulator (fixed cadence). K2: limited community ambulator (uneven surfaces, low obstacles). K3: community ambulator with cadence variation, exceeds basic ambulation. K4: high-impact, athletic — child, athlete. Microprocessor knees (C-Leg, Genium) generally require K3+ for coverage.
What is the energy expenditure of TT vs TF amputation?
Energy cost above baseline ambulation: transtibial (TT, below-knee) ~9-25%; transfemoral (TF, above-knee) ~65-100%; bilateral TF can exceed 200%. This is why preserving the knee joint (TT amputation) when vascularly possible dramatically improves functional outcomes vs TF amputation.
How do silicone liners suspend a prosthesis?
Silicone liners roll onto the residual limb providing a soft interface. Suspension options: pin-lock (distal pin engages locking mechanism in socket), suction (one-way valve creates negative pressure on doffing), lanyard (cable attaches liner to socket), or sleeve. Silicone liners are durable and provide better skin protection than older Pelite/EVA liners but require more maintenance.
How should I study for ABC CPA?
Plan 60-100 hours over 8-12 weeks. Focus weighted study on Prosthetic Components (25%) and Biomechanics/Gait (20%). Master amputation levels and K-levels, socket designs, suspension options, knee unit hierarchy, and TT vs TF energy expenditure. Hands-on practice with socket modification, alignment, and gait observation reinforces written content.