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Dislocation in total hip arthroplasties

C D Fackler, R Poss

    Clinical Orthopaedics and Related Research
    |September 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Total hip arthroplasty dislocation is a frequent complication, often linked to component malposition and surgeon experience. Strategies like trochanteric osteotomy and careful patient selection can mitigate risks.

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    Area of Science:

    • Orthopedic Surgery
    • Biomedical Engineering

    Background:

    • Dislocation is a significant complication following total hip arthroplasty (THA).
    • The incidence of THA dislocation appeared to be increasing during the study period.

    Purpose of the Study:

    • To investigate the causes and risk factors associated with dislocation after THA.
    • To evaluate the effectiveness of different surgical techniques and post-operative management strategies.

    Main Methods:

    • Retrospective analysis of 1,443 total hip arthroplasties performed between 1970 and 1975.
    • Correlation of dislocation events with component positioning, surgeon experience, patient history, and surgical technique (including trochanteric osteotomy).

    Main Results:

    • Dislocation was the most frequent complication, with an increasing incidence.

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  • Component malposition, often unrecognized by the surgeon, was frequently associated with dislocation.
  • Less experienced surgeons and patients with prior hip surgery were at higher risk.
  • Dislocation was 2.5 times more frequent when trochanteric osteotomy was not performed.
  • Post-operative traction did not reduce subsequent dislocation rates compared to early mobilization.

    • Conclusions:

    • Component malposition and surgical factors are key contributors to THA dislocation.
    • Trochanteric osteotomy and careful surgical technique are important for stability.
    • Surgical intervention can be effective for recurrent dislocations with component malposition.
    • Articulated prostheses are not recommended based on these findings.