title: Leg axis after computer-navigated total knee arthroplasty: a prospective randomized trial comparing computer-navigated and manual implantation.
abstract: To compare the alignment after computer-navigated total knee arthroplasty, 52 patients were randomly allocated to 2 groups. Twenty-seven patients received a total knee arthroplasty with the aid of a kinematic computer-navigation system, and 25 patients received a total knee arthroplasty with the conventional method. Both groups were well balanced concerning demographic data and preoperative scores. At 3-month follow-up, the mechanical alignment of the leg reached the desired straight axis in more cases with the computer-navigated implantation. This difference was statistically significant. The femoral and tibial mechanical anteroposterior axis and the femoral and tibial sagittal tilt (slope) measured on sagittal x-rays were not significantly improved in this patient group.
authors.affiliation: Department of Orthopaedic Surgery, University of Ulm, RKU, 89081 Ulm, Germany.
authors.forename: Ralf
authors.initials: R
authors.lastname: Decking
authors.forename: Yma
authors.initials: Y
authors.lastname: Markmann
authors.forename: Johannes
authors.initials: J
authors.lastname: Fuchs
authors.forename: Wolfhart
authors.initials: W
authors.lastname: Puhl
authors.forename: Hanns-Peter
authors.initials: HP
authors.lastname: Scharf
mesh_terms: D000368:Aged; D019645:Arthroplasty, Replacement, Knee; D017760:Bone Malalignment / Q000000981:diagnostic imaging*; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D010043:Outcome and Process Assessment, Health Care; D011183:Postoperative Complications / Q000000981:diagnostic imaging*; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012984:Software; D025321:Surgery, Computer-Assisted; D013977:Tibia / Q000000981:diagnostic imaging