Several amputation levels are included in the category of ‘above knee’:

• Hemipelvectomy, through the pelvis
• Hip Disarticulation, through the hip
• Transfemoral, through the femur
• Knee Disarticulation through the knee

The most important portion of a prosthesis is the socket, which is the component the comes into direct contact with the residual limb.  A socket is fabricated based on a mold of the residual limb.  There are many methods of prosthetic suspension, which is how the prosthesis is held on.

Examples of suspension systems include:

• Pin locking silicone gel liner
• Vacuum pump suction
• Suction
• Quad socket design
• Ischial containment
• Waist belt
• Lanyard
• Symmetry liner suction

There are a variety of prosthetic knees and feet available, each design recommended based on the user’s:

• Overall body weight
• Activity level
• Stage in rehabilitation
• Unique anatomy
• Personal preference

The purpose of a prosthetic knee and foot is to simulate natural movement and absorb shock the upon gait impact.

The majority of prosthetic feet function by mechanical means.  The Proprio foot actually includes microprocesor technology.

In addition to the many mechanical prosthetic knees available, several micropocessor designs have been developed, such as:

• Genium ^[1]
• C-Leg
• Rheo
• Plie