Dual Mobility Total Hip Replacements in Young Patients- A Systematic Review

Background There is little consensus on outcomes of dual Mobility total hip replacement (DM-THR) in younger patients. We performed a systematic review to examine this.Methods A systematic review of all observational studies and randomised controlled trials of patients under 70 with primary DM-THR in MEDLINE, EMBASE, Pubmed, Cochrane was performed according to PRISMA guidelines. Collected data included demographics, revision, dislocation and infection rates and functional scores.Results Twelve papers studying 738 DM-THR in 664 patients were included. The mean patient age was 46.9 years (13.5- 69.0), with 319 (48.0%) being female and 419 (52.0%) being male. After an average follow-up of 90.0 months (1-371 months), the revision rate was 12.7% (84 hips), 0 dislocations were reported but 2.5% (15 hips) underwent intra-prosthetic dislocation. 32.1% hip revisions were due to aseptic loosening.Conclusion Limited literature surrounding the use of DM-THR suggests favourable stability but higher revision rates than conventional THR.