DOES THE HIP-SHELF PROCEDURE MODIFY THE FUNCTION AND SURVIVAL OF PRIMARY HIP ARTHROPLASTY? A CASE-CONTROL STUDY COMPARING OUTCOMES OF ARTHROPLASTY AFTER HIP-SHELF TO THOSE OF ARTHROPLASTY IN DYSPLASTIC HIPS AT A MINIMUM TEN YEARS' FOLLOW-UP
2018
The hip-shelf procedure is less often indicated since the introduction of peri-acetabular osteotomy (PAO). Although this procedure does not modify pelvic shape, its influence on subsequent total hip arthroplasty (THA) is not known. We performed a case-control study comparing THA after hip-shelf surgery and THA in dysplastic hips to determine: 1) its influence on THA survival, 2) technical issues and complications related to the former procedure. We performed a retrospective case-control study comparing 61 THA cases done after hip-shelf versus 63 THA in case-matched dysplastic hips (control group). The control group was matched according to sex, age, BMI, ASA and Charnley score, and bearing type. We compared survival and function (Harris, Oxford-12), complications at surgery, rate of bone graft at cup insertion, and post-operative complications. The 13-year survival rates for any reason did not differ: 89% ± 3.2% in THA after hip shelf versus 83% ± 4.5% in the controls (p = 0.56). Functional scores were be...
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