Humeral component of a shoulder joint prosthesis

摘要

A humeral component of a reverse shoulder prosthesis includes a stem part configured for location within the intramedullary cavity of the humerus, the stem part having a stem axis, an epiphyseal part connected to the elongate stem part and having a concave bearing surface defining an epiphyseal axis, and wherein the epiphyseal axis is offset posteriorly relative to the stem axis.

主权项

1. A reverse shoulder joint prosthesis for implantation at least partially within an intramedullary cavity of a humerus bone, comprising:
a stem part having an elongated portion configured for location within the intramedullary cavity, a stem connection feature having a connection axis, and a stem axis defined as extending centrally through the elongated portion; an epiphyseal part connected to the stem part and having a bone engaging surface, a concave bearing surface defining an epiphyseal axis and a epiphyseal connection feature configured to mate with the stem connection feature; and wherein the epiphyseal axis is offset posteriorly relative to the stem axis and the connection axis is parallel with the stem axis when the stem part is assembled with the epiphyseal part and wherein, when in use, the bone engaging surface of the epiphyseal part and at least a portion of the stem part are adapted to contact at least an aspect of the humerus bone.