Method of Humeral Head Resurfacing and/or Replacement and System for Accomplishing the Method

摘要

A method, and devices for facilitating the method, for shoulder replacement surgery. The method entails establishing a mechanical support in a the anatomical neck plane of the proximal humeral head, fixing a jig to the mechanical support, where the jig supports a drill guide with its axis perpendicular to the anatomical neck plane, adjusting the drill guide it coincide with the axis of the humeral head, drilling a hole through the humeral head for insertion of a shaft which will support and rotate a reaming bit. The reaming bits used to resurface the humeral head and the glenoid fossa are inserted through the back of the patient, through a gap created between two easily separated muscles, rather than through a gap cut through the subscapularis muscle on the front of the joint. A suitable jig is provided to facilitate the method.

主权项

1. A system for facilitating shoulder replacement or resurfacing surgery, on a shoulder joint characterized by a humerus having a humeral head further characterized by a humeral head axis and a humeral head apex, and a glenoid fossa opposing the humeral head, said system comprising:
a first pin suitable for insertion into the humeral head in fixed relationship to the anatomical neck plane; a drill guide; and a jig for holding the drill guide, said jig comprising:
a clamp for securing the jig to the first pin, said clamp having a first channel for receiving the first pin;a frame fixed to the clamp, said frame configured to position a drill guide such that the bore of the drill guide is held in a perpendicular relationship to the anatomical neck plane;where at least a portion of the frame is adjustable to permit movement of the drill guide to position it coaxially with the axis of humeral head.