Primary Total Hip Arthroplasty With Duraloc Cup in Patients Younger Than 50 Years : A 5- to 7-Year Follow-Up Study |
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Authors: | Tian JialiangMu Zhongyou MD Pei FuxingZhou Zongke MD Shen BinYang Jing MD |
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Institution: | Department of Orthopaedics, West China Hospital, Joint Replacement Center of West China, Sichuan University, Chengdu, Sichuan Province, PR China |
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Abstract: | We evaluated the clinical and radiographic results of 67 (64 patients) cementless Duraloc-300 cups for young active patients after a mean follow-up period of 6.2 years. The preoperative mean Harris hip score improved from 46.24 to 96.5 points at 5 years. The survivorship of the cup, using radiographically confirmed aseptic loosening as the end point, was 100% at 5 years. The mean rate of liner wear was 0.125 mm/y (00-0.39 mm/y). Acetabular osteolysis was found in 14% (9 hips) of the 67 hips, and the osteolysis is related to polyethylene wear (P = .0024) and sex (P = .001). Although there was no aseptic loosening of the components, there was a high rate of liner wear of the polyethylene liner and acetabular osteolysis. |
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Keywords: | total hip arthroplasty press-fit Duraloc cup young patients osteolysis |
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