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Home >> Services >> Prosthetic >> Lower extrimity >> Knee Disarticulation Prostheses

Knee Disarticulation Prostheses

The knee disarticulation amputation (through – the – knee – amputation) is executed if it is no longer possible to maintain a short residual section of the lower leg. Due to the anatomical prerequisite, functional and cosmetic requirements, only modular prostheses are used in the fitting of knee disarticulations. In contrast to a transfemoral amputation, the residual limb can be fully loaded after knee disarticulation. Because the femoral condyles transfer body weight to the prosthetic socket, no tuberosity seat is required. The bulky shape of the condylar residual limb provides for a rotationally –stable connection to the prosthetic socket. A soft socket of thermoplastic PE foam is anatomically shaped inside, and by compensating for the undercuts offers a conical shape outside. This makes for easy donning of the prosthesis during sitting.

The musculature of residual limb remains balanced because the adductors have not been transected, while the long laver arm allows for good control of the prosthesis. When compared with the qualities of a transfemoral amputation offers advantages to both geriatric and athletic patients. Due to the length of the residual limb, only special knee joint construction can be employed. The center of rotation of these polycentric joints is located closed to the anatomical axis of rotation.


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