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Hip replacement system and method for implanting the same

  • US 5,507,833 A
  • Filed: 09/28/1994
  • Issued: 04/16/1996
  • Est. Priority Date: 02/10/1992
  • Status: Expired due to Term
First Claim
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1. A prosthesis for surgical implantation into a bone, comprising:

  • an elongated shank having a surface and said shank extending between proximal and distal ends, said shank having a relatively wide proximal end and an opposed, relatively narrow distal end,said proximal end having a generally cruciform cross-section with four circumferentially spaced radially extending lobes each including a respective bone engaging surface,said distal end having a generally rectangular cross-section with a pair of opposed, relatively wide distal-defining surfaces and a pair of opposed, relatively narrow distal-defining surfaces;

    a first plurality of depression formed in at least a portion of said bone engaging surface;

    a second plurality of depressions formed in at least a portion of said distal-defining surfaces of said distal end,each of said depressions being discrete, non-linear and spaced from adjacent depressions on said body and configured for enhancement of bone-prosthesis fixation,the surface of said shank between the first and second plurality of depressions being essentially smooth and free of depressions.

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