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Updated: Jul 4, 2026

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty
09:31

Individualized Stem-positioning in Calcar-guided Short-stem Total Hip Arthroplasty

Published on: February 27, 2018

Late dislocation after total hip arthroplasty.

R M D Meek1, D B Allan, G McPhillips

  • 1Department of Orthopaedic Surgery, Southern General Hospital, 1345 Govan Road, Glasgow G51 4TF, Scotland, United Kingdom. rmdmeek@doctors.org.uk

Clinical Medicine & Research
|July 2, 2008
PubMed
Summary
This summary is machine-generated.

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Total hip arthroplasty dislocation risk remains stable over time, with no late increase observed after the initial postoperative period. This finding is crucial for understanding long-term implant survival and patient outcomes.

Area of Science:

  • Orthopedic surgery
  • Arthroplasty research
  • Biostatistics in healthcare

Background:

  • Total hip arthroplasty (THA) dislocation is a significant complication, often occurring within the first three months post-surgery.
  • While numerous factors influence dislocation, research has primarily concentrated on surgical aspects, with epidemiological factors remaining debated.
  • Existing treatment options for THA dislocation have unpredictable outcomes, highlighting the need for better understanding of incidence over time.

Purpose of the Study:

  • To determine the incidence of dislocation following total hip arthroplasty over an extended period.
  • To investigate whether the risk of dislocation increases beyond the initial postoperative months.

Main Methods:

  • Analysis of data from the Scottish National Arthroplasty Project, utilizing Scottish Morbidity Record (SMR01) data.

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The Transition to an Anterior-Based Muscle Sparing Approach Improves Early Postoperative Function but is Associated with a Learning Curve
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  • A prognostic study design, classified as Level II-1 (prospective study), was employed.
  • Inclusion of 62,175 total hip arthroplasties performed between April 1989 and March 2004.

    • Main Results:

    • An overall annual incidence of dislocation was found to be 0.9%.
    • The study identified no significant increase in the rate of dislocation after the first two years post-surgery.
    • Data analysis did not reveal a late increase in the dislocation rate.

    Conclusions:

    • The findings suggest that the risk of dislocation after total hip arthroplasty does not exhibit a late increase.
    • This indicates a stable dislocation incidence beyond the initial two-year period.
    • Understanding long-term dislocation rates is essential for improving patient outcomes and implant longevity.