CPT CPT Residual Limb Management & Socket Design

Question 1

What is the primary purpose of residual limb wrapping (shrinker or elastic bandaging) after amputation?

Accepted Answer

Reduce edema and shape the residual limb for prosthetic fitting

Answer

Prevent infection at the surgical site

Answer

Increase blood circulation to the distal residual limb

Answer

Strengthen residual limb musculature post-surgery

Question 2

Which socket design for transfemoral amputees provides ischial containment by capturing the ischium inside the socket brim?

Accepted Answer

Ischial containment (IC) socket

Answer

Quadrilateral socket

Answer

Plug fit socket

Answer

Patellar tendon bearing socket

Question 3

What is 'volume fluctuation' in residual limb management and why is it clinically significant?

Accepted Answer

Daily changes in residual limb size that affect socket fit and comfort

Answer

Permanent atrophy of residual limb muscles over time

Answer

Scar tissue formation that changes limb shape

Answer

Phantom limb sensations that vary in intensity

Question 4

What is the purpose of a prosthetic liner (e.g., silicone, urethane, or thermoplastic elastomer liner)?

Accepted Answer

Provides cushioning, suspension, and skin protection for the residual limb

Answer

Reinforces the structural rigidity of the socket

Answer

Adds weight to match the contralateral limb

Answer

Seals the socket from moisture ingress only

Question 5

Which condition of the residual limb would most contraindicate the use of a silicone liner for suspension?

Accepted Answer

Fragile or compromised skin with open wounds or active skin breakdown

Answer

Mature, well-healed residual limb with stable volume

Answer

Residual limb with mild bony prominences

Answer

Residual limb with normal sensation and circulation

Question 6

When applying an ace bandage (elastic wrap) to a transtibial residual limb, in which direction should wrapping begin to achieve proper shaping?

Accepted Answer

Distally and move proximally using a figure-eight pattern

Answer

Proximally and move distally in circular turns

Answer

Circumferentially around the mid-shaft only

Answer

From the knee crease wrapping toward the ankle