Primary total hip arthroplasty with Duraloc cup in patients younger than 50 years: a 5- to 7-year follow-up study.
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.
Jialiang
Tian
T
Department of Orthopaedics, West China Hospital, Joint Replacement Center of West China, Sichuan University, Chengdu, Sichuan Province, PR China.
Zhongyou
Mu
M
Fuxing
Pei
P
Zongke
Zhou
Z
Bin
Shen
S
Jing
Yang
Y
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
D001672:Biocompatible Materials; D011095:Polyethylenes