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Table 4 Pooled event rate and clinical performance stratified by indications

From: Risk factors and modes of failure in the modern dual mobility implant. A systematic review and meta-analysis

  Rate or Mean Value 95% CI
Aseptic loosening
 Primary THA 0.009 0.007-0.012
 Revision THA 0.022 0.016-0.030
 Recurrent dislocation 0.024 0.013-0.045
 Overall 0.016 0.008-0.032
Septic loosening
 Primary THA 0.008 0.006-0.011
 Revision THA 0.023 0.017-0.032
 Recurrent dislocation 0.025 0.013-0.049
 Overall 0.016 0.007-0.037
Extra-articular dislocation
 Primary THA 0.006 0.005-0.008
 Revision THA 0.013 0.009-0.017
 Recurrent dislocation 0.025 0.014-0.043
 Overall 0.012 0.006-0.025
Intra-prosthetic dislocation
 Primary THA 0.008 0.006-0.010
 Revision THA 0.010 0.007-0.015
 Recurrent dislocation 0.016 0.008-0.031
 Overall 0.010 0.007-0.015
Periprosthetic fracture
 Primary THA 0.009 0.007-0.011
 Revision THA 0.009 0.006-0.012
 Recurrent dislocation 0.013 0.006-0.025
 Overall 0.009 0.008-0.011
Implant failure
 Primary THA 0.023 0.018-0.030
 Revision THA 0.055 0.042-0.073
 Recurrent dislocation 0.060 0.034-0.103
 Overall 0.042 0.021-0.081
Harris Hip score
 Primary THA 89.47 87.62-91.33
 Revision THA 81.89 78.96-84.83
 Recurrent dislocation 82.65 77.41-87.89
 Overall 84.87 78.99-90.76
Merle d’Aubigné score
 Primary THA 17.08 16.85-17.30
 Revision THA 15.45 15.07-15.83
 Recurrent dislocation 16.57 15.85-17.28
 Overall 16.36 15.20-17.53
  1. THA: total hip arthroplasty.