Anterolateral approach using tibial tubercle osteotomy for total knee arthroplasty: can we predict failure?
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ORIGINAL PAPER
Anterolateral approach using tibial tubercle osteotomy for total knee arthroplasty: can we predict failure? Marc Wishart & Markus P. Arnold & Rolf W. Huegli & Felix Amsler & Niklaus F. Friederich & Michael T. Hirschmann Received: 1 August 2012 / Accepted: 16 October 2012 / Published online: 6 November 2012 # Springer-Verlag Berlin Heidelberg 2012
Abstract Purpose The purpose of this study was to identify predictive factors for the occurrence of complications in a consecutive series of patients who underwent step-cut tibial tubercle osteotomy (TTO) and subsequent screw refixation in primary total knee arthroplasty (TKA). Methods Using standardised conventional radiographs, critical parameters including TTO length and depth, proximal abutment width (OT), and orientation and placement of fixation screws were measured in 422 patients (mean age of 71 years and a follow-up time range of one to five years) with two screw fixations. Results Medial spatial orientation in the distal screw (11 %, p00.046), the TTO length (
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