title: NexGen LPS rotating platform total knee arthroplasty: medium-term results of a prospective study.
abstract: The purpose of this study is to present midterm results of NexGen LPS (Zimmer, Warsaw) rotating platform total knee arthroplasty. A prospective consecutive series of 50 primary rotating platform total knee replacements in 43 patients were clinically and radiographically evaluated at a mean follow-up of 46.4 (range 30-78) months. There were 12 men (30%) and 31 women (70%) with an average age of 72.3 years (range 55-85). All implants were cruciate-substituting and cemented. Patients were assessed using the Knee Society Clinical Rating System and the Knee Society Total Knee Arthroplasty Roentgenographic Evaluation and Scoring System. Pre-operatively, the mean knee score was 50.7 points (SD 15.1) and the mean function score was 40.5 points (SD 22.7). Post-operatively the mean knee score was 91.6 (SD 6.5) and the mean function score was 85.9 (SD 17.4). No sign of component loosening or osteolysis could be identified. The NexGen LPS rotating platform total knee replacement design provided excellent mid-term clinical and radiographical results.
authors.affiliation: Department of Orthopaedics and Traumatology, Mauriziano Umberto I Hospital, University of Turin Medical School, Turin, Italy. rossir@fastwebnet.it
authors.forename: Roberto
authors.initials: R
authors.lastname: Rossi
authors.forename: Andrea
authors.initials: A
authors.lastname: Ferro
authors.forename: Matteo
authors.initials: M
authors.lastname: Bruzzone
authors.forename: Davide Edoardo
authors.initials: DE
authors.lastname: Bonasia
authors.forename: Giacomo
authors.initials: G
authors.lastname: Garzaro
authors.forename: Filippo
authors.initials: F
authors.lastname: Castoldi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000000981:diagnostic imaging / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D004867:Equipment Design; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000601:surgery*; D011446:Prospective Studies; D011859:Radiography; D020127:Recovery of Function; D012720:Severity of Illness Index; D033081:Shear Strength; D019415:Torque; D016896:Treatment Outcome