title: Midterm results of Optetrak posterior-stabilized total knee system after 7 to 12 years in a university hospital.
abstract: A clinical study has been carried out on 434 posterior-stabilized knee prostheses (Optetrak; Exactech, Gainesville, Fla) implanted between 1995 and 2000 in a university general hospital by 23 surgeons. At a mean follow-up of 8.8 years, 297 knees in 249 patients were available for review. Average patient age at surgery was 71.8 years. Average body mass index was 28.8 kg/m(2). Mean flexion range was 108° .The average knee score (Hospital for Special Surgery) increased from 48 points preoperatively to 86 points (60-97 points) at the final review. Of the patients, 81% had an excellent or good result, 14.9% had a fair result, and 4.1% had a poor result. Using the Kaplan-Meier method, we obtained a 91.3% predicted implant survival at 12 years including septic and aseptic revision in the best-case scenario.
authors.affiliation: Department of Orthopedic Surgery, Hospital Clinico San Carlos, Madrid, Spain.
authors.forename: Rodrigo
authors.initials: R
authors.lastname: García-Crespo
authors.forename: Fernando
authors.initials: F
authors.lastname: Marco
authors.forename: Luis Enrique
authors.initials: LE
authors.lastname: Moro
authors.forename: Gloria
authors.initials: G
authors.lastname: Ariza
authors.forename: Rafael
authors.initials: R
authors.lastname: Luque
authors.forename: Luis
authors.initials: L
authors.lastname: López-Durán
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D001172:Arthritis, Rheumatoid / Q000601:surgery*; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation* / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D006785:Hospitals, University; D006801:Humans; D015994:Incidence; D007593:Joint Instability / Q000601:surgery*; D053208:Kaplan-Meier Estimate; D007719:Knee Joint / Q000502:physiology / Q000601:surgery; D007720:Knee Prosthesis; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D011183:Postoperative Complications / Q000453:epidemiology; D011474:Prosthesis Design; D016059:Range of Motion, Articular / Q000502:physiology; D012086:Reoperation; D012189:Retrospective Studies; D016896:Treatment Outcome