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Related Experiment Video

Updated: May 5, 2026

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Acetabular Distraction Technique: A Multicenter Study With a Minimum 2-Year Radiographic Follow-Up.

Christopher M Melnic1, Mehdi S Salimy2, Gregory T Minutillo3

  • 1Department of Orthopaedic Surgery, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts; Department of Orthopaedic Surgery, Newton-Wellesley Hospital, Newton, Massachusetts.

The Journal of Arthroplasty
|February 24, 2024
PubMed
Summary
This summary is machine-generated.

Acetabular distraction is a viable treatment for chronic pelvic discontinuity and severe acetabular bone loss. This technique shows excellent early survivorship and radiographic evidence of bridging callus, indicating successful bone healing.

Keywords:
acetabular distractionchronic pelvic discontinuitymodular porous augmentsradiographic outcomesrevision total hip arthroplastysurgical technique

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Area of Science:

  • Orthopedic Surgery
  • Reconstructive Surgery

Background:

  • Chronic pelvic discontinuity presents significant challenges in revision total hip arthroplasty due to severe acetabular bone loss.
  • Acetabular distraction offers an alternative surgical approach by stabilizing the acetabular component through pelvic elastic recoil.
  • This technique can be augmented with modular porous augments for substantial acetabular defects.

Purpose of the Study:

  • To report 2-year radiographic findings of acetabular distraction for treating chronic pelvic discontinuity.
  • To evaluate the efficacy and outcomes of acetabular distraction in patients with severe acetabular bone loss.

Main Methods:

  • A retrospective study identified 91 patients undergoing acetabular distraction by 5 surgeons across 5 institutions (2002-2021).
  • 53 patients (mean follow-up 4.8 years) with Paprosky IIIB defects (77.4%) were included; 62.3% received modular porous augments.
  • Failure was defined as subsequent revision of the acetabular construct.

Main Results:

  • Overall cup survivorship was 90.6%, with only 9.4% of patients requiring acetabular revision post-procedure.
  • Of the 48 evaluable patients, 95.8% demonstrated radiographic bridging callus at the chronic pelvic discontinuity.
  • 13 patients (24.5%) required reoperation, with 46.2% having prior revision hip arthroplasty.

Conclusions:

  • Acetabular distraction is a viable treatment for acetabular bone loss associated with chronic pelvic discontinuity.
  • The procedure demonstrates excellent early survivorship and radiographic evidence of bone healing (bridging callus).
  • Longer follow-up studies are necessary to further assess the long-term efficacy of this technique.