Which of the following is a common positioning guideline for both transfemoral and transtibial amputations?

• A. Elevate the residual limb for several hours daily
• B. Encourage continuous prone lying
• C. Limit sitting to 40 minutes of each hour
• D. Keep the knee flexed at all times

Answer: (C)

Preventing joint contractures through positioning is essential after either type of amputation because contractures can hinder prosthetic fitting and function. A common guideline for both transfemoral and transtibial amputations is to limit sitting to about 40 minutes of each hour. This helps keep the leg in a more neutral or extended position rather than prolonged flexion, reducing the risk of knee and hip flexion contractures and aiding eventual prosthetic use.

Why this is the best choice: sitting with the joints in a flexed position for long periods promotes soft tissue shortening and joint tightness, making it harder to achieve a proper prosthetic fit and full ROM. Limiting sitting time counters this tendency, supporting better limb length, alignment, and swelling management.

For context, other practices like leaving the residual limb elevated for many hours is typically an early edema-control measure rather than a sustained guideline, and encouraging continuous prone lying isn’t practical or necessary in the long term. Keeping the knee flexed at all times is clearly counterproductive, as it promotes contractures rather than prevention.