title: Failure analysis of alumina on alumina total hip arthroplasty with a layered acetabular component: minimum ten-year follow-up study.
abstract: This prospective study reports the outcome of total hip arthroplasty (THA) performed in a consecutive series of patients using an alumina ceramic on a ceramic-layered component (Alumina-Bearing-Surface system). The cohort consisted of 270 hips in 229 patients. The study evaluated the clinical and radiological results over a mean follow-up of 11.4 years. Revision THA was performed on 58 hips, including alumina alternative failure in 50 hips, loosening in 4 hips, recurrent dislocation in 2 hips, stem neck fracture in 1 hip and hematoma in 1 hip. The survival rate was 68% with revision for any reason as the end point. The risk factors of implant failure are the preoperative range of motion of the hip joint and postoperative dislocation.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Medicine, Saga University, Saga, Japan.
authors.forename: Shunsuke
authors.initials: S
authors.lastname: Kawano
authors.forename: Motoki
authors.initials: M
authors.lastname: Sonohata
authors.forename: Takafumi
authors.initials: T
authors.lastname: Shimazaki
authors.forename: Masaru
authors.initials: M
authors.lastname: Kitajima
authors.forename: Masaaki
authors.initials: M
authors.lastname: Mawatari
authors.forename: Takao
authors.initials: T
authors.lastname: Hotokebuchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000537:Aluminum Oxide; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects* / Q000295:instrumentation; D001672:Biocompatible Materials; D002516:Ceramics; D019544:Equipment Failure Analysis; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000009:adverse effects*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation; D055815:Young Adult
chemical_list: D001672:Biocompatible Materials; D000537:Aluminum Oxide
keywords: alumina; ceramic-on-ceramic; fracture; implant failure; survival rate