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

Static alignment establishes a stable base of support while the patient stands, before dynamic adjustments are made during walking.

Question 2

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

Accepted Answer

The prosthetist

Answer

The prosthetist observes the patient's gait during dynamic alignment and directs the prosthetic technician to make any necessary component adjustments.

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

Proper pylon alignment ensures the ground reaction force passes through the socket in a manner that mimics the natural biomechanical axis of the limb.

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

An alignment jig or dedicated alignment device allows the technician to accurately set and verify the angular relationship between the socket and prosthetic foot.

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

Excessive toe-out is typically caused by too much external rotation in the pylon or foot attachment, which must be corrected during bench or dynamic alignment.

(CPT) Certified Prosthetic Technician Practice Test

(CPT) Certified Prosthetic Technician Practice Test

CPT CPT Prosthetic Fitting & Alignment