A Study of Dislocation after Total Hip Arthroplasty

Abstract

Of the 59 primary total hip arthroplasties (THA) performed between 1993 and 1996, five posterior dislocations occurred (8.5%). Two hips had single dislocation, while the remaining three hips had more than one dislocation.
Radiologically, the angle of acetabular component was not significantly different between the control group and the dislocated group.
The findings of this study suggest that the factors which most likely influenced dislocation after THA were socket malposition and component design.