title: CT analysis after navigated versus conventional implantation of TKA.
abstract: BACKGROUND
  Within a 15-month period, 64 patients underwent 71 primary total knee arthroplasties in a randomized trial comparing the navigated versus the conventional implantation technique. CT scans were chosen for use as imaging procedures pre- and post-operatively to collect data concerning alignment and rotation of the leg as well as the prosthesis.
  
  
  RESULTS
  There was no difference between pre- and post-operative data in rotation of the femoral component for navigated versus conventional implantation. The average deviation from the correct long-leg axis was found to be 1.8 +/- 1.3 degrees in the navigated group and 2.5 +/- 1.6 degrees in the conventional group (P < 0.05).
authors.affiliation: Department of Orthopaedics and Trauma Surgery, University Hospital of Freiburg, Hugstetter Strasse 55, Freiburg i. Brsg., Germany. michael.oberst@uniklinik-freiburg.de
authors.forename: Michael
authors.initials: M
authors.lastname: Oberst
authors.forename: Carola
authors.initials: C
authors.lastname: Bertsch
authors.forename: Gerhard
authors.initials: G
authors.lastname: Konrad
authors.forename: Andreas
authors.initials: A
authors.lastname: Lahm
authors.forename: Ulrich
authors.initials: U
authors.lastname: Holz
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D006801:Humans; D035002:Lower Extremity / Q000000981:diagnostic imaging*; D011475:Prosthesis Failure; D017755:Prosthesis Fitting; D016059:Range of Motion, Articular; D020127:Recovery of Function; D012399:Rotation; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014057:Tomography, X-Ray Computed