title: Positioning of total knee arthroplasty with and without navigation support. A prospective, randomised study.
abstract: We conducted this prospective randomised and externally evaluated study to investigate whether the use of a navigation system during total knee arthroplasty leads to significantly better results than the hand-guided technique. A total of 240 patients was included in the study. All patients received a condylar knee prosthesis. Two surgeons performed all the operations using the Stryker knee navigation system. Exclusion criteria included the necessity for the primary use of constrained implants. The results revealed a highly significant difference between the two groups in favour of navigation with regard to the mechanical axis, the frontal and sagittal femoral axis and the frontal tibial axis (p < 0.0001). The use of a navigation system was therefore shown to improve the alignment of the implant.
authors.affiliation: Orthopaedic Department, Immanuel Hospital, Free University of Berlin, Berlin, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Sparmann
authors.forename: B
authors.initials: B
authors.lastname: Wolke
authors.forename: H
authors.initials: H
authors.lastname: Czupalla
authors.forename: D
authors.initials: D
authors.lastname: Banzer
authors.forename: A
authors.initials: A
authors.lastname: Zink
mesh_terms: D000368:Aged; D001172:Arthritis, Rheumatoid / Q000601:surgery; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D016009:Chi-Square Distribution; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging; D007720:Knee Prosthesis; D008297:Male; D020370:Osteoarthritis, Knee / Q000601:surgery; D011183:Postoperative Complications / Q000209:etiology; D011446:Prospective Studies; D011859:Radiography; D016896:Treatment Outcome