DPT Prosthetics & Orthotics

Question 1

What is the primary purpose of total contact in a transtibial prosthetic socket?

Accepted Answer

To distribute pressure evenly across the residual limb

Answer

Total contact distributes pressure evenly across the entire residual limb surface, preventing focal high-pressure areas that cause skin breakdown.

Question 2

Which type of ankle-foot orthosis (AFO) is most appropriate for a patient with isolated foot drop due to peroneal nerve palsy?

Accepted Answer

Posterior leaf spring AFO

Answer

A posterior leaf spring AFO provides dorsiflexion assist during swing phase while allowing some sagittal motion, making it ideal for isolated foot drop with preserved push-off.

Question 3

The K-level classification system used in lower limb prosthetic prescription is primarily based on:

Accepted Answer

The patient's rehabilitation potential and functional mobility level

Answer

The K-level system (K0–K4) classifies patients by their rehabilitation potential and expected functional mobility to guide appropriate prosthetic component selection.

Question 4

Why is initial flexion (5–10°) commonly built into a transfemoral prosthetic socket?

Accepted Answer

To facilitate hip extensor activation and prevent excessive lumbar lordosis

Answer

Initial flexion positions the residual limb so the hip extensors can fire effectively during stance and prevents compensatory lumbar lordosis.

Question 5

Which prosthetic foot design is classified as an energy-storing and return (ESAR) foot?

Accepted Answer

Carbon fiber dynamic response foot

Answer

Carbon fiber dynamic response feet deflect and store energy during loading, then return that energy at push-off, mimicking the function of the Achilles tendon and plantar fascia.

(DPT) Board Certified Doctor of Physical Therapy Practice Test

(DPT) Board Certified Doctor of Physical Therapy Practice Test

DPT Prosthetics & Orthotics