US Patent 10226364 Prosthesis socket with insertion aid

A prosthesis stem includes a stem body for receiving an amputation stump and an insertion aid apparatus, which facilitates the insertion of the amputation stump into the stem body, wherein the insertion aid apparatus comprises an insertion inlay which is connected in the proximal edge region thereof to a holding apparatus which is fixed to the stem body. The insertion inlay has an insertion stocking, which is movable between an outer position, in which the insertion inlay is at least partially located outside of the stem body, and an inner position, in which the insertion stocking covers the stem body.