Endoprosthesis for shoulder joint head replacement - has metal cap, whose inner surface has open cell or pore structure and has conical shaft tapering towards full end and forming sleeve

摘要

The metal cap (2) has a rotation symmetrical outer, dished surface, while its inner surface (10, 12) has a structure (16) with open cells on faces. Inside (8) of the cap is pref. formed a central shaft (14) conically tapering towards its full end, forming a sleeve. The shaft is also formed of an open cell or porous metal structure. Alternately it may have a solid metal core and an open cell or pore surface structure. It typically protrudes from the cap inside by a first length. The cap inner surface has a specified configuration. ADVANTAGE - Improved anchorage in adjacent bone tissue.