Glenoid arthroplasty and offset reamers

Abstract

Arthroplasty components include an articular surface and a bone-facing surface. The bone-facing surface bears at least one anchoring element adapted for an oblique implantation trajectory. The articular surface includes a larger radius of curvature in the superior-inferior direction than in the anterior-posterior direction. An inferior chamfer may be present on the articular surface. Instruments and implantation methods are also disclosed. Reamers include reamer heads coupled to various offset shaft configurations.

Description

Technical field [0001] The present disclosure relates to anchoring elements and joint surfaces for human or veterinary implants. The disclosed anchoring element is used in situations where it is difficult to expose, the implant trajectory is inclined to the implant site, or the plant site is tapered, conical or wedge-shaped. For example, the disclosed anchoring element is used in the context of a socket implant for shoulder arthroplasty, so that the preparation of the socket and the implantation of the socket component occur along an inclined surgical approach and implant trajectory. The oblique or anterior-lateral access to the socket is technically simpler and less traumatic than the lateral trajectory to the socket. The present disclosure is made in the context of the glenoid component of shoulder plasty for the purpose of illustrating the relevant principles of the technique. Background technique [0002] In total shoulder arthroplasty, a socket implant is attached to the p...

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In this case, the surgeon may damage nerves or blood vessels

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