title: Greater satisfaction in older patients with a mobile-bearing compared with fixed-bearing total knee arthroplasty.
abstract: A prospective, randomized, controlled, double-blind trial was performed to compare outcomes between 61 mobile- and 58 fixed-bearing primary TKAs in patients aged 70 years or older. At last follow-up, no difference was found for Knee Society score. The mobile-bearing group had greater knee flexion at 3 and 6 months, but this was similar at 2 years. The patient satisfaction was better in the mobile-bearing group than in fixed-bearing group, with respect to Knee Society functional score, Western Ontario MacMasters University score, Short-Form 12 score, and visual analog scale score. A multivariate analysis confirmed that the only independent factors predictive of postoperative quality of life were early postoperative flexion. We believe that better perception and satisfaction with mobile-bearing in older patients was due to the earlier regain of their knee flexion. Our results justify the use of mobile-bearing design in the older population.
authors.affiliation: Department of Orthopaedic Surgery, Hospital General Elda, Ctra Elda-Sax s/n, 03600 Elda, Alicante, Spain.
authors.forename: Alejandro
authors.initials: A
authors.lastname: Lizaur-Utrilla
authors.forename: Javier
authors.initials: J
authors.lastname: Sanz-Reig
authors.forename: Maria Angeles
authors.initials: MA
authors.lastname: Trigueros-Rentero
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods*; D004185:Disability Evaluation; D004311:Double-Blind Method; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000502:physiology / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D020370:Osteoarthritis, Knee / Q000503:physiopathology / Q000601:surgery*; D010147:Pain Measurement; D017060:Patient Satisfaction; D011474:Prosthesis Design; D016059:Range of Motion, Articular / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology; D012189:Retrospective Studies; D016896:Treatment Outcome