title: Consistency of implantation of a total knee arthroplasty with a non-image-based navigation system: a case-control study of 235 cases compared with 235 conventionally implanted prostheses.
abstract: The aim of the study was to assess the consistency of the non-image-based navigation system OrthoPilot, Aesculap, Tuttlingen, Germany, in total knee arthroplasty (TKA) implantation in 5 European centers. Two hundred thirty-five TKAs implanted with this navigation system were matched (according to severity of the preoperative coronal deformation and body mass index) to a historical control group of 235 TKAs implanted with a conventional technique. Consistency of implantation was studied on a 3-month postoperative radiological control with coronal long-leg and sagittal standard x-rays. The use of the OrthoPilot navigation system allowed a statistically significant improvement in the consistent placement of both tibial and femoral components. In accordance with current literature, survival of the navigated implanted prostheses is expected to be longer.
authors.affiliation: Centre de Traumatologie et d'Orthopédie, Strasbourg, France.
authors.forename: Jean-Yves
authors.initials: JY
authors.lastname: Jenny
authors.forename: Ulrich
authors.initials: U
authors.lastname: Clemens
authors.forename: Steffen
authors.initials: S
authors.lastname: Kohler
authors.forename: Hartmuth
authors.initials: H
authors.lastname: Kiefer
authors.forename: Werner
authors.initials: W
authors.lastname: Konermann
authors.forename: Rolf K
authors.initials: RK
authors.lastname: Miehlke
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D016022:Case-Control Studies; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D025321:Surgery, Computer-Assisted