title: A randomized trial of ceramic-on-ceramic bearing versus ceramic-on-crossfire-polyethylene bearing in total hip arthroplasty: five-year outcomes.
abstract: This study determined how ceramic-on-ceramic bearing THA affected joint-specific pain, function and stiffness in the first five postoperative years compared with ceramic-on-highly-crosslinked-polyethylene bearing THA. Subjects less than 61 years of age were randomized to ceramic-on-ceramic (CERAMIC) [n = 48] or ceramic-on-highly-crosslinked-polyethylene (POLYETHYLENE) [n = 44] bearing THA. Subjects were assessed using the Western Ontario McMaster Osteoarthritis Index (WOMAC) and the RAND 12-Item Health Survey (RAND-12) preoperatively, and at one and five years postoperatively. 92 subjects(50 (54%) males; average age = 52 (SD 6.6) years) were enrolled. 78 (85%) subjects returned five years postoperatively. All subjects reported improvements at one and five years in all measured indices with no group differences detected. Seven (8%) subjects experienced postoperative THA complications, none related to bearing surfaces; two subjects (POLYETHYLENE) required revision for instability. Both bearing surfaces provided excellent short-term results in younger subjects.
authors.affiliation: Department of Physical Therapy, University of Alberta, Edmonton, AB, Canada.
authors.forename: Lauren A
authors.initials: LA
authors.lastname: Beaupre
authors.forename: Andrei
authors.initials: A
authors.lastname: Manolescu
authors.forename: D W C
authors.initials: DW
authors.lastname: Johnston
mesh_terms: D018771:Arthralgia; D019644:Arthroplasty, Replacement, Hip; D001672:Biocompatible Materials; D002516:Ceramics; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D020959:Polyethylene; D011474:Prosthesis Design; D016059:Range of Motion, Articular; D020127:Recovery of Function; D016896:Treatment Outcome
chemical_list: D001672:Biocompatible Materials; D020959:Polyethylene