title: Primary total hip arthroplasty with Duraloc cup in patients younger than 50 years: a 5- to 7-year follow-up study.
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.
authors.affiliation: Department of Orthopaedics, West China Hospital, Joint Replacement Center of West China, Sichuan University, Chengdu, Sichuan Province, PR China.
authors.forename: Tian
authors.initials: T
authors.lastname: Jialiang
authors.forename: Mu
authors.initials: M
authors.lastname: Zhongyou
authors.forename: Pei
authors.initials: P
authors.lastname: Fuxing
authors.forename: Zhou
authors.initials: Z
authors.lastname: Zongke
authors.forename: Shen
authors.initials: S
authors.lastname: Bin
authors.forename: Yang
authors.initials: Y
authors.lastname: Jing
mesh_terms: D000077:Acetabulum / Q000601:surgery; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D001672:Biocompatible Materials; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000601:surgery*; D006622:Hip Prosthesis / Q000009:adverse effects; D006801:Humans; D007592:Joint Diseases / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D010014:Osteolysis / Q000000981:diagnostic imaging* / Q000209:etiology; D011095:Polyethylenes; D011859:Radiography; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D011095:Polyethylenes