CPO Clinical Application & Fitting 4

Question 1

A patient presents with L3-L4 paraplegia. Which lower limb orthosis classification best supports ambulation for this patient?

Accepted Answer

KAFO (knee-ankle-foot orthosis)

Answer

L3-L4 paraplegia causes knee extensor weakness, necessitating a KAFO to provide knee stability and foot clearance during ambulation.

Question 2

Which of the following is a contraindication for the use of a rigid ankle-foot orthosis (AFO)?

Accepted Answer

Significant pitting edema with fluctuating limb volume

Answer

Significant fluctuating edema changes limb volume unpredictably, making a rigid AFO ill-fitting and likely to cause pressure injuries.

Question 3

During prosthetic training, a transfemoral amputee with a microprocessor knee falls during stair descent. The clinician should first evaluate:

Accepted Answer

Whether the patient's weight-activation threshold is set correctly

Answer

Microprocessor knees rely on correct weight-activation thresholds; improper settings can cause the stance-phase brake to disengage prematurely during stair descent.

Question 4

For a patient with complete C6 quadriplegia, which upper extremity orthosis best supports functional hand use for ADLs?

Accepted Answer

Dynamic wrist-driven flexor hinge orthosis (tenodesis splint)

Answer

The tenodesis splint harnesses residual active wrist extension (C6) to drive passive finger flexion, enabling grasp and release for ADLs.

Question 5

When evaluating prosthetic socket fit in a patient with a mature transtibial residual limb, which finding is most acceptable?

Accepted Answer

Mild redness over the patellar tendon resolving within 20 minutes

Answer

Mild reactive redness over load-bearing areas that resolves within 20 minutes after removal is considered an acceptable normal response to pressure.

(CPO) Certified Prosthetist Orthotist Practice Test

(CPO) Certified Prosthetist Orthotist Practice Test

CPO Clinical Application & Fitting 4