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Related Experiment Videos

Instability following total hip arthroplasty.

Hargovind DeWal1, Edward Su, Paul E DiCesare

  • 1Musculoskeletal Research Center, Department of Orthopaedic Surgery, NYU-Hospital for Joint Diseases, New York, New York 10003, USA.

American Journal of Orthopedics (Belle Mead, N.J.)
|August 29, 2003
PubMed
Summary

Total hip arthroplasty dislocation is a common complication. Understanding patient and surgical factors is key to preventing and managing instability, with closed treatment successful in most cases.

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Area of Science:

  • Orthopedic Surgery
  • Biomedical Engineering

Background:

  • Dislocation is the second most frequent complication following total hip arthroplasty (THA).
  • Early postoperative dislocations are often multifactorial, stemming from patient-specific issues and surgical techniques.
  • Pre-existing conditions like prior surgeries and neurological deficits increase dislocation risk.

Purpose of the Study:

  • To review the causes and management of early postoperative total hip arthroplasty dislocations.
  • To outline diagnostic approaches and treatment strategies for hip instability after THA.

Main Methods:

  • Review of patient factors (e.g., previous surgery, neurologic impairment).
  • Analysis of surgical factors (e.g., approach, component positioning, impingement).
  • Assessment of diagnostic methods including history, physical exam, and radiographic evaluation.

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Main Results:

  • Closed reduction successfully treats instability in approximately two-thirds of cases.
  • The remaining one-third of cases necessitate surgical intervention for instability.
  • Identified risk factors include surgical approach, component malpositioning, and prosthetic impingement.

Conclusions:

  • Comprehensive patient and surgical assessment is crucial for managing THA dislocations.
  • Non-operative management is effective for a majority of dislocations.
  • Surgical options for persistent instability include revision arthroplasty and specialized implants like constrained liners.