JOURNAL ARTICLE

Midterm results of hybrid total hip arthroplasty for treatment of osteoarthritis secondary to developmental dysplasia of the hip-Chinese experience

Bin Shen, Jing Yang, Liao Wang, Zong-ke Zhou, Peng-de Kang, Fu-xing Pei
Journal of Arthroplasty 2009, 24 (8): 1157-63
19729269
This study was designed to evaluate the midterm results of hybrid total hip arthroplasty in a consecutive series of 45 Chinese patients with osteoarthritis secondary to dysplastic hip. The average follow-up was 6.6 years. A total of 24 hips were classified as dysplasia, 20 hips as low dislocation, and 13 hips as high dislocation. The preoperative Harris score was 46.19 +/- 18.01, which improved to 91.78 +/- 3.52 at the final follow-up. The rate of polyethylene liner wear was 0.27 mm/y. Osteolysis was identified around 5 acetabular components and 13 femoral components. With the use of loosening or revision as the end point for failure, the survival rate was 1.0. We suggest that hybrid total hip arthroplasty in Chinese developmental dysplasia of hip patients has favorable results at midterm follow-up, even though their lifestyle includes more deep flexion of the hip. There is no significant difference of postoperative Harris score with increasing severity of dysplasia.

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