Abstract：Objective To research the clinical Results of hip resurfacing arthroplasty(HRA) for patients with Crowe type Ⅰ or Ⅱ developmental dysplasia of the hip(DDH). Methods From March 2005 to December 2006, a total of 80 Crowe type Ⅰ or Ⅱ dysplasia hip patients were randomly assigned for HRA or total hip replacement (THR). Three patients planed for HRA were converted to THR, three HRA patients and two THR patients were lost follow-up. This left a total of 34 patients (37 hips) who underwent HRA and 38 (39 hips) who underwent THR. Radiographic and clinical evaluations were taken 6 weeks, 3months, 1 year and then they were followed up annually. Results The mean follow-up period was 59.4 months (52 to 70) in the HRA group and 60.6 months (50 to 72) in the THR group. There was no failure of the prosthesis in either group. There was no difference in the mean post-operative Harris hip scores between the groups(P=0.073), while hip flexion was significantly better after HRA(P＜0.01). There was no difference in the mean abduction angle of the acetabular component between the two groups(P=0.982) and the mean size of the acetabular component in the HRA group was significantly larger than that in the THR group (49.5 mm vs 46.1 mm, P=0.001). Conclusions The clinical result after HRA was similar to that after THR, but flexion of the hip was better after HRA. More acetabular bone will be sacrificed in HRA in compensation for a bigger femoral head.
王琦 张先龙 蒋垚 陈云苏 沈灏 邵俊杰. 髋关节表面置换术治疗Crowe Ⅰ、Ⅱ型髋关节发育不良[J]. 中华解剖与临床杂志, 2014, 19(1): 19-23.
Wang Qi, Zhang Xianlong, Jiang Yao, Chen Yunsu, Shen Hao,Shao Junjie. Hip resurfacing arthroplasty for patients with Crowe Ⅰ and Crowe Ⅱ developmental dysplasia of the hip. Chinese Journal of Anatomy and Clinics, 2014, 19(1): 19-23.
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