The purpose of this study was to determine if the use of both a larger femoral head size and a posterior capsular repair would lead to a decreased incidence of dislocation following revision total hip arthroplasty (THA). Two hundred forty-two consecutive revision THAs with posterolateral approach were performed between 2000 and 2005. Group 1 had 132 revision THAs with posterolateral approach and 28-mm head size without posterior capsule repair. Group 2 had 100 revision THAs with a 32-mm head size and repair of the remaining hip capsule. There were no statistically significant differences in the two groups. Group 1 had 14 dislocations (10.6%). Group 2 had 3 dislocations (2.7%) (P < .05). Based on the results of this retrospective review, the authors recommend the use of both larger femoral head sizes and repair of any posterior capsular tissue available in patients undergoing revision hip arthroplasty.
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