CPT CPT Prosthetic Fitting & Alignment

Question 1

What is the primary goal of static alignment in lower-limb prosthetics?

Accepted Answer

Achieve a stable base of support in a standing position

Answer

Maximize walking speed on level surfaces

Answer

Reduce prosthetic weight for the patient

Answer

Improve cosmetic appearance of the prosthesis

Question 2

During dynamic alignment, which professional typically observes the patient's gait and directs adjustments?

Accepted Answer

The prosthetist

Answer

The physical therapist

Answer

The orthotist

Answer

The certified prosthetic technician

Question 3

When aligning a transtibial (below-knee) prosthesis, the socket should be positioned so the pylon is oriented in which direction during stance phase?

Accepted Answer

Vertically aligned with the ground reaction force

Answer

Slightly anterior to the residual limb

Answer

Posterior to the midline of the foot

Answer

Lateral to the socket centerline

Question 4

Which tool is most commonly used by a prosthetic technician to verify the angular alignment of a prosthetic foot relative to the socket?

Accepted Answer

Alignment jig or alignment device

Answer

Tape measure

Answer

Caliper

Answer

Torque wrench

Question 5

What does excessive toe-out (external foot rotation) in a transtibial prosthesis most likely indicate?

Accepted Answer

Excessive external rotation of the pylon

Answer

Insufficient socket flexion

Answer

Prosthetic foot set too far posterior

Answer

Socket trim line placed too proximally

Question 6

During bench alignment of a transfemoral (above-knee) prosthesis, the knee unit is generally set in how many degrees of flexion?

Accepted Answer

0 to 5 degrees of flexion

Answer

10 to 15 degrees of flexion

Answer

20 to 25 degrees of flexion

Answer

30 to 40 degrees of flexion