title: Alumina-on-alumina ceramic versus metal-on-highly cross-linked polyethylene bearings in total hip arthroplasty: a comparative study.
abstract: The aim of the study was to evaluate the reliability and durability of alumina-on-alumina ceramic in comparison to metal-on-highly cross-linked polyethylene (CoCr/HXLPE) bearing couples. This prospective randomised study involved 150 patients (157 hips). All patients (mean age: 54.7 years) obtained an identical fibre metal midcoat femoral stem and fibre metal-coated acetabular shell. In 78 patients (82 hips) we used alumina, while in 72 patients (75 hips) metal-polyethylene bearing couples were used. During a mean 50.4-month follow-up period (51 ± 8 alumina and 50 ± 8.9 metal-polyethylene) no statistically significant changes in clinical and radiographic parameters were noted between the two groups. There was no ceramic breakage and no need for revision surgery due to the ceramic liner. The alumina bearing couples proved to be as reliable as CoCr/HXLPE.
authors.affiliation: Institute for Orthopaedic Surgery "Banjica", University of Belgrade, Serbia.
authors.forename: Zoran
authors.initials: Z
authors.lastname: Bascarevic
authors.forename: Zoran
authors.initials: Z
authors.lastname: Vukasinovic
authors.forename: Nemanja
authors.initials: N
authors.lastname: Slavkovic
authors.forename: Borislav
authors.initials: B
authors.lastname: Dulic
authors.forename: Goran
authors.initials: G
authors.lastname: Trajkovic
authors.forename: Violeta
authors.initials: V
authors.lastname: Bascarevic
authors.forename: Sladjan
authors.initials: S
authors.lastname: Timotijevic
mesh_terms: D000537:Aluminum Oxide; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation / Q000379:methods*; D020099:Coated Materials, Biocompatible; D005260:Female; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D020959:Polyethylene; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D013499:Surface Properties; D016896:Treatment Outcome
chemical_list: D020099:Coated Materials, Biocompatible; D020959:Polyethylene; D000537:Aluminum Oxide