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Related Experiment Videos

Single-stage, bilateral, cementless total hip arthroplasty

M A Ritter1, B K Vaughn, L D Frederick

  • 1Indiana University, Mooresville, USA.

The Journal of Arthroplasty
|April 1, 1995
PubMed
Summary

Single-stage, bilateral, cementless total hip arthroplasty is safe and effective. Optimal initial fit of the prosthesis is key for successful outcomes, and weight-bearing does not negatively impact stability or bone ingrowth.

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Engineering
  • Reconstructive Surgery

Background:

  • Cementless total hip arthroplasty (THA) is a common procedure for hip joint degeneration.
  • Bilateral THA in a single stage presents unique challenges regarding patient recovery and surgical efficiency.
  • Assessing the long-term effects of cementless implants and weight-bearing is crucial for optimizing patient outcomes.

Purpose of the Study:

  • To evaluate the clinical and radiographic outcomes of single-stage, bilateral, cementless total hip arthroplasties.
  • To determine the impact of weight-bearing on the stability and bone ingrowth of cementless hip prostheses.
  • To identify critical factors influencing the success of cementless THA.

Main Methods:

  • Retrospective evaluation of 92 patients (184 arthroplasties) who underwent single-stage, bilateral, cementless THA.

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  • Clinical assessment using postoperative Harris hip scores.
  • Radiographic analysis to determine femoral and acetabular component fixation and stability.

    • Main Results:

    • Average postoperative Harris hip score of 94.6.
    • 96% optimal fixation for acetabular components; 70% optimal fixation for femoral components.
    • Weight-bearing did not adversely affect initial stability or bone ingrowth, emphasizing the importance of initial rigid fixation.

    Conclusions:

    • Single-stage, bilateral, cementless THA can be performed successfully without compromising either hip.
    • Achieving optimal initial fit in both metaphyseal and diaphyseal regions of the femur is critical for prosthesis success.
    • Initial rigid fixation is the paramount factor influencing bone ingrowth and long-term prosthesis survival.