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Abstract

Objectives:

This retrospective study aims to evaluate the outcome of cementing dual-mobility articulation into porous revision shells.

Methods:

From a total of 102 revision hips between 2015 and 2021 in our revision database, we identified 47 cemented dual-mobility articulations. Indications for revision total hip arthroplasty (rTHA) included aseptic failure of acetabular shell (n = 34), infection (n = 7) and dislocation. We included patients with a cemented dual mobility articulation in a porous revision shell and a minimum of 1 year follow-up.

Results:

No complications were noted intraoperatively. There was no dislocation and no radiological signs of loosening at latest follow-up. The mean Oxford Hip Score improved from 24 (SD 13) preoperatively to 42 (SD 15) postoperatively. There was no revision and no peri-prosthetic joint infection.

Conclusions:

Cementing a dual-mobility shell into a well-fixed porous revision shell is an appropriate technique to achieve the desired stability and orientation of the acetabular construct and restore the hip centre.

Keywords

Acetabular component cemented dual mobility dislocation instability porous shell revision hip arthroplasty

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Outcome of dual-mobility articulation in revision hip arthroplasty of porous revision acetabular component