MULTI-COMPONENT IMPLANT ASSEMBLY WITH DUAL ARTICULATING AND/OR ROTATING SURFACES

摘要

An implant assembly for re-establishing a glenohumeral joint between a scapula and humerus. A first receiver is adapted to being mounted to a reconditioned glenoid cavity defined in the scapula, with a second receiver adapted to being mounted to a reconditioned humeral head associated with the humerus. A three dimensional and at least partially spherical shaped component is interposed between the first and second receivers for establishing each of a first articulating interface with the first receiver and a rotating interface with the second receiver.

主权项

1. An implant assembly for re-establishing a glenohumeral joint between a scapula and humerus, comprising:
a first receiver adapted to being mounted to a reconditioned glenoid cavity defined in the scapula, said first receiver exhibiting a concave profile; a second receiver adapted to being mounted to a reconditioned humeral head associated with the humerus, said second receiver exhibiting a planar surface profile from which projects an expanded portion; a three dimensional component interposed between said first and second receivers such that a spherical portion of said partially spherical portion of said intermediate component seats against said concave profile of said first receiver in universally articulating fashion; and said intermediate component further having a flattened profile, a recessed interior profile extending from said flattened profile in an interiorly widened fashion, said flattened profile abutting said planar surface profile of said second receiver upon said expanded portion seating within said recessed interior profile and so that said second receiver establishes a second rotational interface with said intermediate component.