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Difficult complications after hip joint replacement. Dislocation

B F Morrey1

  • 1Mayo Clinic, Rochester, MN 55905, USA.

Clinical Orthopaedics and Related Research
|December 31, 1997
PubMed
Summary
This summary is machine-generated.

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Hip replacement dislocation occurs in 2-3% of patients, particularly females and the elderly. Identifying the cause, like cup malrotation, is key for successful treatment and reducing complications.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Dislocation after hip replacement (total hip arthroplasty) presents a significant challenge, with an overall incidence of 2-3%.
  • Risk factors include female sex, advanced age, reoperation, cup malrotation, and posterior surgical approaches.
  • Extended acetabular walls have shown promise in reducing dislocation rates, especially in revision surgeries.

Purpose of the Study:

  • To review the incidence, causes, and management strategies for dislocation following hip replacement.
  • To evaluate the effectiveness of different treatment approaches for early and late dislocations.

Main Methods:

  • Literature review and analysis of existing studies on hip replacement dislocation.
  • Examination of causative factors, including surgical technique and implant characteristics.

Related Experiment Videos

  • Assessment of treatment outcomes for immobilization, reoperation, and salvage options.

    • Main Results:

    • Posterior surgical approaches are consistently associated with increased instability.
    • Early dislocations (< 3 months) are successfully managed with immobilization in 60-70% of cases.
    • Reoperations are most successful when the specific cause is identified, with cup reorientation and trochanteric advancement achieving ~80% success.

    Conclusions:

    • Defining the specific cause of dislocation is crucial for successful surgical management.
    • Salvage options like bipolar implants and captive articular designs show potential but require further long-term evaluation.
    • Optimizing surgical technique and implant selection can mitigate dislocation risk.