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Surgically implanted prosthesis

  • US 4,871,367 A
  • Filed: 09/03/1987
  • Issued: 10/03/1989
  • Est. Priority Date: 09/03/1987
  • Status: Expired due to Fees
First Claim
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1. A surgically implantable prosthesis for replacing a knuckle joint, comprising:

  • (a) a one-piece main body of flexible inert material including first and seoncd spaced-apart end sections and a narrower web extending between and joining said end sections together for flexing movement about a particular flexing axis through the web, whereby the main body functions as a hinge, said end sections and said web together defining a key-hole shaped groove across one side said web between said end sections, said groove including a lowermost through-hole segment having a circular cross-section defining the top of the web and a generally v-shaped segment extending up from and opening into said through-hole between said end sections; and

    (b) first and second stems connected to and extending out from the first and second end sections of said main body in directions normal to said flexing axis and away from one another, said first and second stems being implantable within cooperating intramedullary canals of adjacent metacarpal and proximal phalanx bones, respectively, defining said knuckle joint.

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