Shoulder prosthesis
First Claim
Patent Images
1. A shoulder prosthesis comprising:
- a stem having a rod portion and a proximal face;
a humeral head having an articulation surface and a bottom face opposite said articulation surface; and
an adaptor interposed between said proximal face of said stem and said bottom surface of said humeral head, said adaptor being relatively positionable on said stem to provide a first adjustment and relatively positionable on said head to provide a second adjustment so as to couple said head to said stem in a fixed orientation within a range of orientations defined by said first and second adjustments.
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Accused Products
Abstract
The present invention is directed to a modular shoulder prosthesis having an adjustable radial offset and/or angular inclination provided by relative rotation of an adapter interdisposed between the stem and the head. Specifically, the interface configuration between the stem and the adapter, as well as between the adapter and the head are designed such that relative positioning of these components provides a continuous adjustment in the radial offset and/or angular inclination. Indicia are provided at the interface between the adapter and the head to precisely determine the magnitude and direction of the adjustment being made.
156 Citations
7 Claims
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1. A shoulder prosthesis comprising:
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a stem having a rod portion and a proximal face;
a humeral head having an articulation surface and a bottom face opposite said articulation surface; and
an adaptor interposed between said proximal face of said stem and said bottom surface of said humeral head, said adaptor being relatively positionable on said stem to provide a first adjustment and relatively positionable on said head to provide a second adjustment so as to couple said head to said stem in a fixed orientation within a range of orientations defined by said first and second adjustments. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification