Knee disarticulation has the following advantages over above-knee amputation:
|A||Longer lever arm.|
|B||Better cosmetic result.|
|C||Easier prosthetic fitting.|
Longer lever arm.
D. End-bearing stump.
E. Supracondylar suspension.
a. Patients with knee disarticulations have a slightly worse cosmetic appearance due to an inequality of knee heights particularly noticeable when sitting.
b. Additionally, prosthetic fitting is significantly more difficult and requires the involvement of a prosthetist familiar with the specific considerations.
c. On the other hand, the increase in lever arm, the end-bearing stump, and the use of supracondylar suspension far outweigh the disadvantages when such an amputation is possible from an anatomic standpoint.