Related Experiment Video
Updated: Jul 3, 2026
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
Dual mobility versus fixed bearings in complex primary total hip arthroplasty: A systematic review and meta-analysis
Mithun Manohar1, Vishnu Senthil2, Preethi Selvaraj3
1Department of Orthopaedics, Gleneagles Hospital (A Fortis Network Hospital), Tamil Nadu, 600100, India.
Background:
Dual mobility (DM) implants are designed to enhance stability in total hip arthroplasty (THA), particularly in complex primary cases; however, their effectiveness in such scenarios remains incompletely defined.
Methods:
A systematic review and meta-analysis was conducted following PRISMA guidelines. Databases including PubMed, Embase, Scopus, Web of Science, and Cochrane Library were searched (January 2000-December 2025). The protocol was registered in PROSPERO (CRD420261349002). Eight comparative studies (n = 4424 hips) were included. The primary outcome was dislocation, while revision rates and implant performance were secondary outcomes.
Results:
Dual mobility constructs significantly reduced dislocation risk compared to fixed-bearing implants (OR = 0.21; 95% CI: 0.12-0.37; I2 = 0%). Subgroup analysis in complex primary THA showed further reduction (2/267 vs 14/233; OR ≈ 0.11). Revision rates were comparable or lower in the DM group. Findings predominantly reflect short-to mid-term follow-up, and long-term implant survival could not be established.
Conclusion:
Dual mobility implants significantly reduce dislocation rates in complex primary THA and demonstrate favourable short-to mid-term revision outcomes. However, long-term survival data remain limited.
