DPT Prosthetics & Orthotics 3

Question 1

A patient classified as K2 for prosthetic prescription is best described as:

Accepted Answer

A limited community ambulator with low variable cadence

Answer

K2 describes a limited community ambulator with the ability to traverse low-level environmental barriers at a fixed cadence, warranting basic prosthetic components.

Question 2

The patellar tendon bearing (PTB) transtibial socket design achieves pressure distribution by:

Accepted Answer

Concentrating load over the patellar tendon and other pressure-tolerant areas while relieving bony prominences

Answer

The PTB socket uses the patellar tendon and other pressure-tolerant soft tissue areas as primary load-bearing regions, with relief areas sculpted over bony prominences like the fibular head.

Question 3

Which spinal orthosis is most appropriate for conservative management of a stable thoracolumbar burst fracture?

Accepted Answer

Thoracolumbosacral orthosis (TLSO)

Answer

A rigid TLSO provides stabilization of the thoracolumbar junction, limiting motion in all planes and reducing axial loading at the fracture site to facilitate healing.

Question 4

In adolescent idiopathic scoliosis (AIS), which brace is the standard of care for curves between 25–40 degrees, worn approximately 23 hours per day?

Accepted Answer

Boston TLSO (underarm brace)

Answer

The Boston TLSO is the most widely used and evidence-supported full-time brace for AIS curves in the 25–40° range, with studies including the BrAIST trial confirming its effectiveness.

Question 5

What is the primary biomechanical goal of a lateral heel wedge foot orthosis for a patient with medial compartment knee osteoarthritis?

Accepted Answer

Shift the center of pressure laterally to reduce the knee adduction moment

Answer

A lateral heel wedge tilts the foot into eversion, shifting the center of pressure laterally and reducing the knee adduction moment, thereby decreasing compressive load on the medial compartment.

(DPT) Board Certified Doctor of Physical Therapy Practice Test

(DPT) Board Certified Doctor of Physical Therapy Practice Test

DPT Prosthetics & Orthotics 3