O2031 SHORT TERM EXPERIENCE OF THE BIRMINGHAM HIP RESURFACING (BHR) IN HIGHER GRADE CDH”

Abstract

Aims: In opposition to stemmed THR, Hip Resurfacing offers considerable advantages like bone preservation, however a correction of the pathological rotation and offset of the upper femur in higher grade CDH cases is not possible during implantation without subtrochanteric osteotomy. The aim of this study is the comparison of short term clinical and radiological results of Hip Resurfacing in higher grade CDH without osteotomy and primary osteoarthritis to examine if the clinical results are affected because of this disadvantage. Methods: Comparison of the clinical and radiological results of 38 BHR arthroplasties with acetabular bone grafting in CDH cases Eftekhar grade B and 76 BHR in primary osteoarthritis, AVN or Epiphyseolysis capitis femoris cases with a follow up from 6 months to 3 years. Results: Up to one year postoperatively the BHR with acetabular grafting showed slightly lower Harris Hip Scores than the primary osteoarthritis cases with differences up to 5 points. In opposition to that the range of motion and the number of positive Trendelenburg signs were not different. Also a difference in the rate of complications was not detectable. Conclusions: In our opinion the slightly slower rehabilitation of BHR with acetabular grafting in higher grade CDH depended on the partial weight bearing over 3 months postoperatively and the higher number of cases with an affected contralateral hip but not on the resultant pathology.