Changes in sagittal component alignment alters patellar kinematics in TKA: an in vitro study

Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA
Armin KeshmiriGünther Maderbacher

Abstract

Patellar maltracking due to incorrect component alignment is considered as a main reason for anterior knee pain after total knee arthroplasty (TKA). In contrast to coronal and axial component placement, the influence of sagittal component alignment on patellar kinematics has not been investigated so far. In ten lower cadaveric limbs, TKAs were implanted using a commercial computer navigation system. In six knees, the femoral component was aligned in 5° and in four knees in 0° of flexion, respectively. Patellar kinematics were registered by means of a computer navigation system using an additional patella tracking array and correlated with femoral and tibial sagittal component alignment. Sagittal component alignment significantly altered patellar mediolateral shift (p < 0.05). In contrast, patellar epicondylar distance, rotation and tilt were not significantly influenced. Sagittal component alignment in TKA has a major impact on patellar kinematics and should therefore be considered while addressing tibiofemoral kinematics intraoperatively.

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Citations

Feb 15, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Shinichi KuriyamaShuichi Matsuda
Jan 26, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Daisuke HamadaKoichi Sairyo
Feb 20, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Günther MaderbacherHermann Maderbacher
May 22, 2018·EFORT Open Reviews·Simon Donell
Jun 28, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Omer SlevinMichael T Hirschmann
Jul 7, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Arnd SteinbrückAndreas Fottner
Nov 14, 2018·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Armin KeshmiriFelix Greimel
May 10, 2017·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Mutsumi WatanabeShuichi Matsuda
Apr 4, 2021·Journal of Clinical Medicine·Leandra BauerArnd Steinbrück
Sep 7, 2021·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Kaushik HazratwalaMatthew P R Wilkinson

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