| 摘要 |
<p>A bearing component 2 for use in a humeral prosthesis, the bearing component 2 comprising a concave bearing surface 4 that terminates at a continuous substantially circular rim 10, the rim 10 defining a first plane 12; a convex engaging surface 6, that is on an opposite side of the bearing component 2 to the bearing surface 4 and terminates in an annular shoulder 18, the shoulder 18 defining a second plane 14; and a connecting region 8 which extends between the first and second planes 12, 14, wherein the first and second planes 12, 14 are not parallel. The bearing reduces impingement of the humeral cup on the scapula in a reverse shoulder prosthesis by providing a wedge shaped bearing connectable to the humeral stem so that the bearing can be placed with the narrowest portion in the inferior medial position to minimise impingement of the cup on the scapula.</p> |
