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Related Experiment Videos

[Conflict between psoas and total hip prosthesis].

M Lequesne1, N Dang, P Montagne

  • 1Service de Rhumatologie, Hôpital Léopold-Bellan, Paris.

Revue Du Rhumatisme Et Des Maladies Osteo-Articulaires
|October 1, 1991
PubMed
Summary
This summary is machine-generated.

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Acetabular cup protrusion after total hip replacement can cause chronic psoas irritation and pain. Careful surgical planning is essential to avoid this complication and ensure better patient outcomes.

Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Context:

  • Chronic psoas irritation secondary to acetabular component malposition after total hip replacement is an underreported complication.
  • This issue often arises from anterior overhang of the acetabular cup, particularly in cases of acetabular dysplasia.

Purpose:

  • To describe the clinical presentation, causes, and treatment outcomes of psoas impingement caused by anteriorly protruding acetabular cups.
  • To highlight the importance of precise implant positioning in total hip arthroplasty.

Summary:

  • A study of six patients with re-operated hip replacements revealed psoas muscle thinning due to anterior acetabular cup overhang.
  • Common symptoms included pain during hip movement, stair climbing, and arising from a chair, with three cases of psoas bursitis.
  • Acetabular dysplasia frequently contributes to anterior cup protrusion, which can be exacerbated by cement or bone grafts.

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Impact:

  • Surgical revision involving overhang resection offers uncertain outcomes, with mild to poor results in 4 out of 6 patients.
  • Preventive measures during the primary total hip replacement, focusing on avoiding anterior acetabular edge protrusion, are crucial for mitigating this complication.