Abstract

The current study evaluated the outcome of a retrospective series of 37 revision total hip arthroplasties with severe acetabular bone defects reconstruction using an antiprotrusio cage We aimed to compare the peri and postoperative complications and mid-term outcomes of two groups a reconstruction using a dual mobility cup DMC cemented into the cage n 14 or a cemented simple polyethylene cup SPEC n 23 at a mean follow-up of 5 years We found an inverse association between the use of DMCs and both dislocation rate p 0 05 and dislocation undergoing revision p 0 05 No aseptic loosening was found in the DMC-group and there were no differences in the rest of the complications between the DMC-group and the SPEC-group p 0 05 In conclusion DMCs demonstrated excellent results at mid-term follow-up in terms of prevention of instability and stable cemented fixation