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Joint replacement method and apparatus

  • US 5,885,297 A
  • Filed: 05/11/1998
  • Issued: 03/23/1999
  • Est. Priority Date: 06/21/1996
  • Status: Expired due to Fees
First Claim
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1. An instrumentation system for preparation of a proximal humerus for receiving a proximal humeral articular surface prosthesis, the prosthesis comprising a stem for placement in the intramedullary canal and an articular surface for articulation against the glenoid, the system comprising a shaft for entering the intramedullary canal from the proximal humeral head end adjacent the articular surface, said shaft having a guide portion, and a plurality of gauges, each having a characteristic size, for determining the size, and cooperating with the shaft'"'"'s guide portion for determining the location, of the natural articular surface relative to the shaft, one gauge being selected that best fits the natural articular surface, each gauge having a first portion which cooperates with the shaft guide portion to position the gauge relative to the shaft, a second portion for engaging the articular surface, and a gauge guide portion for guiding resection of the natural proximal humeral head.

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