Early Clinical Effect of the Osteotomy of Acetabular Medial Wall in Total Hip Arthroplasty for Treatment of Developmental Dysplasia of Hip

Abstract：Objective To explore the early-term clinical effects and surgical technique of osteotomy of acetabular medial wall in total hip arthroplasty(THA)for developmental dysplasia of hip(DDH)of Crowe Ⅱ Ⅲ type. Methods From May 2011 to February 2015,nineteen patients of DDH with osteoarthritis received osteotomy of acetabular medial wall in THA(2 male 2 hips,17 female 18hips). Whether the acetabular cup was loose,as well as whether achieving bony union would be checked through the X-ray. All the cases were followed up in 3、6 and 12 months after operation and all patients were evaluated with Harris hip score and VAS hip score. Results Eighteen cases were followed up,patients were accessed by Harris score both before and after operation changed. In 11 cases,the Harris score improved from 78. 32(76. 52 ± 3. 08)before operation to 96. 46(97. 39 ± 2. 32)after operation,and 4 cases with an average of 64. 81(59. 32 ± 6. 08)points preoperatively rose to 87. 36(74. 39 ± 5. 12)points. The excellent and good rate was 83. 33% . Preoperative ROM,Harris hip score and VAS hip score were very different from postoperative,which was a statistical difference(P ﹤ 0. 01). No patients had a postoperative wound infection and complication such as prosthetic loosening and joint dislocation. Conclusion Osteotomy of acetabular me-dial wall in THA is effective for treatment of DDH(Crowe Ⅱ Ⅲ type)with osteoarthritis,and the short-term effects are satis-factory.