Abstract: Disclosed is an internal prosthesis for use with a prosthesis attachable externally to a residual limb having a bone with a free end thereof. The internal prosthesis comprises bone end pressure distributing means disposed completely within the residual limb and open-bottomed bone end containing means attached to the bone end pressure distributing means. In separate embodiments, the bone end pressure distributing means comprises a tubular, mesh sock/sleeve with a central aperture. The open-bottomed end containing means comprises a mesh bone sock/sleeve which surrounds the central aperture and extends up the bone disposed around the aperture and also provided with a reinforced portion. Alternatively, the bone end pressure distributing means comprises a radially extending plate with an central aperture around which is disposed an upwardly extending boss. The bone end containing means comprises an open-ended bone cap which is formed of two sections.

Abstract: Disclosed is an external prosthesis with a magnetically transmissive/receptive layer for use with an internal prosthesis attachable to the stump of a residual limb. The external prosthesis comprises a synthetic body member having a concave socket formed at an end thereof. The socket is sized to receive the stump of a residual limb with an internal prosthesis installed. The socket has disposed on its concave external surface a magnetically transmissive/receptive layer. Magnetic attraction between the magnetically transmissive/receptive layer and the magnetically attractive internal prosthesis will ensure a secure and non-slip installation of the external prosthesis on the residual limb of the user.

Abstract: Amputation apparatus for use with an internal prosthesis attachable to the end of a stump having an outwardly extending bone. The amputation apparatus includes a cap having an internal cavity for insertion over the bone and an opposed outwardly extending boss. A plate having an internal cavity is mountable over the outwardly extending boss of the cap. The plate has a radial extent substantially greater than the radial extent of the cap to define an equal weight distribution surface for internal and external forces over the entire bottom surface of the stump.