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Related Experiment Video

Updated: Jan 18, 2026

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Dual Mobility Cups in Revision Total Hip Arthroplasty: Efficient Strategy to Decrease Dislocation Risk.

Axel Schmidt1, Cécile Batailler1, Camdon Fary2

  • 1Orthopaedic Department, Lyon North University Hospital, Lyon, France.

The Journal of Arthroplasty
|September 30, 2019
PubMed
Summary
This summary is machine-generated.

Dual mobility cups (DMC) significantly reduce dislocation risk in revision total hip arthroplasty (rTHA) compared to standard mobility cups (SMC). This study found no increased risk of early aseptic loosening with DMCs in rTHA patients.

Keywords:
dislocationdual mobility cupre-revisionrevision total hip arthroplastystandard mobility cup

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Area of Science:

  • Orthopedic Surgery
  • Biomaterials Engineering
  • Medical Device Technology

Background:

  • Revision total hip arthroplasty (rTHA) presents higher complication rates than primary procedures.
  • Instability and aseptic loosening are key challenges in rTHA.
  • Comparing dual mobility cups (DMC) and standard mobility cups (SMC) is crucial for improving rTHA outcomes.

Purpose of the Study:

  • To compare the efficacy of DMC versus SMC in revision total hip arthroplasty.
  • To evaluate complication rates, specifically dislocation and aseptic loosening, in rTHA.
  • To assess the medium-term outcomes of DMC and SMC in a decade-long institutional review.

Main Methods:

  • Retrospective review of 295 rTHAs (2006-2016).
  • Patients were divided into DMC (184 revisions) and SMC (111 revisions) groups.
  • Outcomes analyzed included dislocation events and re-revision rates.

Main Results:

  • DMC group showed a statistically significant lower dislocation risk (3.8%) compared to SMC (13.5%; P=.01).
  • Re-revision rates were similar between groups (DMC: 13%, SMC: 17.1%; P=.34).
  • No significant difference in early aseptic loosening was observed between DMC and SMC groups (P=.28).

Conclusions:

  • DMC significantly decreases postoperative dislocation risk in rTHA compared to SMC.
  • DMC use in rTHA does not increase the risk of early aseptic loosening at medium-term follow-up.
  • DMC is a valuable consideration for rTHA, especially given the rising global incidence of hip arthroplasty procedures.