Abstract: A device that is pivotally mounted to a socket of a prosthesis has a top part that bears against the residual limb above a bone to suspend the socket from the limb. As the knee is bent, the device pivots about its pivot point and therefore remains in contact with the limb throughout the entire range of motion of the limb so that the socket does not come off. A convexity is formed in the top part of the device, and that convexity bears against the residual limb just above the medial femoral condyle. Another curvature in the top part allows it to at least partially extend around the medial part of the residual limb. The device is substantially rigid but flexible enough to allow it to conform itself to the contour of the residual limb so that the device will fit numerous individuals having differing bone structures. Use of the device eliminates the need to form the convexity into the socket itself.