Revision of failed Austin Moore prostheses to total hip arthroplasty

ABSTRACT

In this work we evaluated the functional results of the revision of eleven failed Austin Moore hemiarthroplasties to cemented total hip replacements. There were four females and seven male patients, with age ranged between 43 and 64 years [average 52 years and 6 months]. Our patients had their femoral head originally replaced by Austin Moore prostheses following displaced femoral neck fractures, but their implants failed after an average period of 11 months [range 8-21 months] before considering revision. The causes of failure were either due to loosening [6 patients], protrusio i.e. acetabular wear [3 patients], or both loosening and protrusio [2 patients]. Harris hip rating score of our patients before revision was poor for a minimum of six months. Cemented Muller total hip prostheses were used for revisions. We reported either good or excellent results in ten patients, and only one patient scored a fair result after a follow up period of an average of 14 months [range 13 38 months]