title: Conventional versus computer-assisted technique for total knee arthroplasty: a minimum of 5-year follow-up of 200 patients in a prospective randomized comparative trial.
abstract: In the literature, studies of computer-assisted total knee arthroplasty (TKA) after mid-term period are not conclusive and long-term data are rare. In a prospective, randomized, comparative study 100 conventional TKAs (group REG) were compared with 100 computer-assisted TKAs (group NAV). Minimum follow-up was 5years. No difference in implant failure was found with 1.1% in group NAV versus 4.6% in group REG (P=0.368). Group NAV showed a significantly less mean deviation of mechanical limb axis (P=0.015), more TKAs (90% versus 81% in group REG) were within 3° varus/valgus and a higher tibial slope and lateral distal femoral angle (LDFA) accuracy was found (P≤0.034). Clinical investigational parameters showed no differences (P≥0.058). Insall and HSS score total were also higher in group NAV (P≤0.016).
authors.affiliation: Department of Orthopedic Surgery, Academic Teaching Hospital Feldkirch, Medical University of Innsbruck, Austria.
authors.forename: Johannes
authors.initials: J
authors.lastname: Cip
authors.affiliation: Department of Orthopedic Surgery, Academic Teaching Hospital Feldkirch, Medical University of Innsbruck, Austria.
authors.forename: Mark
authors.initials: M
authors.lastname: Widemschek
authors.affiliation: Department of Orthopedic Surgery, Academic Teaching Hospital Feldkirch, Medical University of Innsbruck, Austria.
authors.forename: Matthias
authors.initials: M
authors.lastname: Luegmair
authors.affiliation: Regenerative Pain Center, Chicago, Illinois.
authors.forename: Mitchell B
authors.initials: MB
authors.lastname: Sheinkop
authors.affiliation: Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, Vienna, Austria.
authors.forename: Thomas
authors.initials: T
authors.lastname: Benesch
authors.affiliation: Department of Orthopedic Surgery, Academic Teaching Hospital Feldkirch, Medical University of Innsbruck, Austria.
authors.forename: Arno
authors.initials: A
authors.lastname: Martin
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects / Q000379:methods* / Q000401:mortality*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000601:surgery; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011859:Radiography; D025321:Surgery, Computer-Assisted / Q000009:adverse effects / Q000379:methods* / Q000401:mortality*; D013977:Tibia / Q000000981:diagnostic imaging / Q000601:surgery; D016896:Treatment Outcome
keywords: TKA; comparison; conventional; minimum 5-year follow-up; navigation