Conclusion Based on the current data , the use of DM acetabular components are effective in minimising the risk of instability after both primary and revision THA .
This benefit must be balanced against continuing concerns about the additional modularity , and the new mode of failure of intraprosthetic dislocation .
Aims The aim of this systematic review was to report the rate of dislocation following the use of dual mobility ( DM ) acetabular components in primary and revision total hip arthroplasty ( THA ) .
Are modern dual mobility cups a valuable option in reducing instability after primary hip arthroplasty, even in younger patients?
Hip instability after total hip replacement has been shown to be a critical cause of failure . The use of dual mobility has been classically restricted to patients " at risk " , over 70 years of age . The question rises up about extended indications of so-called " modern " second generation dual mobility cups . This prospect i ve multicenter study reports on first results at 2 - 5 years of the HA anatomical ADM cup  upon two comparative groups of patients under 70 years ( 112 hips ) vs. over 70 years of age ( 325 hips ) . No dislocation , migration , tilting , wear , or intra-prosthetic dislocation was recorded within each of the two cohorts . Survivorship for cup failures at this 4-year period was ideal at 100 % in the younger patients , and 99.7 % in the older group of patients
Conclusion Based on the current data , the use of DM acetabular components are effective in minimising the risk of instability after both primary and revision THA .
This benefit must be balanced against continuing concerns about the additional modularity , and the new mode of failure of intraprosthetic dislocation .
Aims The aim of this systematic review was to report the rate of dislocation following the use of dual mobility ( DM ) acetabular components in primary and revision total hip arthroplasty ( THA ) .