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Updated: Nov 18, 2025

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Clinical Concerns With Dual Mobility- Should I Avoid it When Possible?

Gwo-Chin Lee1, Atul Kamath2, P Maxwell Courtney3

  • 1Department of Orthopaedic Surgery, University of Pennsylvania, Philadelphia, PA.

The Journal of Arthroplasty
|February 7, 2021
PubMed
Summary
This summary is machine-generated.

Dual mobility implants in total hip arthroplasty offer stability but carry risks like dissociation and wear. Selective use is advised for patients at high risk of instability.

Keywords:
bearing failurecomplicationsdual mobilityintraprosthetic dissociationwear

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Science

Background:

  • Dual mobility (DM) articulations are increasingly used in total hip arthroplasty (THA) to enhance stability by maximizing effective ball head size.
  • Despite global use for over 30 years, North American experience is limited, with ongoing concerns regarding specific complications.

Purpose of the Study:

  • To review the available evidence on potential complications associated with dual mobility implants in THA.
  • To provide a comprehensive overview of intraprosthetic dissociation, wear, metallosis, and soft tissue impingement related to DM articulations.

Main Methods:

  • Literature review of existing studies and reported data on dual mobility implants in total hip arthroplasty.
  • Analysis of complication rates, contributing factors, and clinical significance of identified issues.

Main Results:

  • Intraprosthetic dissociation (IPD) occurs in approximately 1% of DM implant cases, though rates are decreasing.
  • Wear can be unpredictable, with increased rates noted in younger, active patients. Corrosion and elevated serum cobalt/chromium levels are reported, with unclear clinical significance.
  • Psoas impingement is a potential cause of groin pain, and DM articulations, while valuable, are associated with unique complications.

Conclusions:

  • Dual mobility articulations are a significant tool for hip surgeons but are not without risks.
  • Selective use of DM bearings is recommended for patients with a high risk of postoperative instability following total hip arthroplasty.