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Neck-slip-prosthesis

  • US 6,706,073 B2
  • Filed: 07/30/2001
  • Issued: 03/16/2004
  • Est. Priority Date: 07/29/2000
  • Status: Expired due to Fees
First Claim
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1. A femoral component for an artificial hip joint for uncemented implementation characterized by:

  • a prosthesis comprising a stem having a proximal end, a remote tip end, a dorsal side, a ventral side, a medial side, and a lateral side, the stem having a central axis configured to be substantially coaxial with a femoral canal in which the stem is placed;

    the stem having a concave indentation on the dorsal side extending axially from the proximal end toward the tip and engaging the bone structure of a femoral neck at a transition region to a greater trochanter of the femur;

    the stem concave indentation being symmetrical right to left from a center;

    the proximal end of the stem having a stem section medial side configured to mate with internal structures of the femoral neck of the femur;

    a cone for mounting a replacement femur head on the proximal stem section;

    the proximal stem section having a support surface for the cone and the stem proximal section joining a lateral stem section that fits into the femoral canal of the femur;

    the length of the stem along the central axis being between 4.5 cm and 11 cm; and

    the stem proximal section having an outer surface configured to contact the inside of the femoral neck dorsally, medially and ventrally through its concave shape.

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