title: Long-term results of porous-coated anatomic total hip arthroplasty for patients with osteoarthritis of the hip.
abstract: Between 1986 and 1997, 136 porous-coated anatomic (PCA) total hip arthroplasties were performed for patients with osteoarthritis of the hip, and data were available for 60 hips at final follow-up (mean follow-up, 15.2years). Of these, 18 hips had undergone revision: 12 for the acetabular component, 10 for the femoral component, and 4 for both components. Survival rate at 23years postoperatively was 60% for the acetabular component and 82% for the femoral component. Multivariate Cox proportional hazards regression showed that annual polyethylene wear rate, size, and abduction angle of the acetabular component were significantly associated with acetabular component revision surgery, and that annual polyethylene wear rate and filling ratio of the femur were associated with femoral component revision surgery.
authors.affiliation: Department of Orthopaedic Surgery, Yokohama City University, Yokohama, Japan.
authors.forename: Taro
authors.initials: T
authors.lastname: Tezuka
authors.affiliation: Department of Orthopaedic Surgery, Yokohama City University, Yokohama, Japan. Electronic address: yute0131@med.yokohama-cu.ac.jp.
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Inaba
authors.affiliation: Department of Orthopaedic Surgery, Yokohama City University, Yokohama, Japan.
authors.forename: Naomi
authors.initials: N
authors.lastname: Kobayashi
authors.affiliation: Department of Orthopaedic Surgery, Yokohama City University, Yokohama, Japan.
authors.forename: Masaaki
authors.initials: M
authors.lastname: Sato
authors.affiliation: Department of Orthopaedic Surgery, Yokohama City University, Yokohama, Japan.
authors.forename: Naoto
authors.initials: N
authors.lastname: Mitsugi
authors.affiliation: Department of Orthopaedic Surgery, Yokohama City University, Yokohama, Japan.
authors.forename: Tomoyuki
authors.initials: T
authors.lastname: Saito
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation; D019544:Equipment Failure Analysis; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D015207:Osteoarthritis, Hip / Q000601:surgery*; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
keywords: long-term results; osteoarthritis of the hip; polyethylene wear; porous-coated anatomic prosthesis; total hip arthroplasty