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Related Experiment Videos

Trochanteric fixation by cable grip in hip replacement.

M A Ritter1, L E Eizember, E M Keating

  • 1Center for Hip and Knee Surgery, Mooresville, Indiana.

The Journal of Bone and Joint Surgery. British Volume
|July 1, 1991
PubMed
Summary
This summary is machine-generated.

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The stainless steel cable grip system for hip surgery showed a high failure rate, with cables breaking in over 30% of cases. Placement within the femoral canal significantly increased cable breakage risk.

Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science
  • Medical Device Engineering

Background:

  • Trochanteric osteotomy is a common procedure during total hip arthroplasty.
  • Fixation of the greater trochanter is crucial for successful surgical outcomes.
  • Previous methods for trochanter fixation have varying success rates.

Purpose of the Study:

  • To evaluate the efficacy and failure modes of the Dall and Miles stainless steel cable grip system for trochanter fixation.
  • To identify factors contributing to the failure of the cable grip system.

Main Methods:

  • A retrospective review of 40 hip arthroplasty cases utilizing the stainless steel cable grip system for trochanter fixation.
  • Analysis of cable breakage and trochanteric non-union rates.

Related Experiment Videos

  • Comparison of fixation methods based on cable placement (inside femoral canal vs. around femoral shaft).

    • Main Results:

    • The stainless steel cable grip system exhibited a high failure rate, with 32.5% of cables breaking and 37.5% of trochanters failing to unite.
    • Cable breakage occurred significantly more often when placed inside the femoral canal (58%) compared to around the femoral shaft (9.5%).
    • Potential causes for breakage include stainless steel-cable/titanium-prosthesis interaction, acute angulation, and material fatigue strength.

    Conclusions:

    • The stainless steel cable grip system, as described by Dall and Miles, demonstrates a high incidence of mechanical failure in trochanter fixation.
    • Cable placement within the femoral canal is associated with a substantially increased risk of breakage.
    • Alternative fixation methods using higher fatigue strength cables placed externally may offer improved outcomes.