Mirco Sgroi1, M Faschingbauer2, K Javaheripour-Otto2, H Reichel2, T Kappe2. 1. Department of Orthopaedics and Orthopaedic Surgery, University of Ulm, Oberer Eselsberg 45, 89081, Ulm, Germany. sgroi.mirco@yahoo.de. 2. Department of Orthopaedics and Orthopaedic Surgery, University of Ulm, Oberer Eselsberg 45, 89081, Ulm, Germany.
Abstract
BACKGROUND AND PURPOSE: The aim of this study was to investigate the potential of MRI to determine rotational alignment after TKA in comparison to the gold standard, CT. METHODS: Rotational alignment was measured in the transverse plane on CT and MR-images in 14 patients prior to TKA revision. Differences between CT and MRI measurements were analysed. RESULTS: There was a strong correlation between CT and MRI measurements for both the tibial (r = 0.929) and femoral (r = 0.942) components with a mean difference of 0.47 ± 1.3 and 0.13 ± 3.2 degrees, respectively. INTERPRETATION: Despite artefact formation, it can be concluded that the rotational alignment of metallic TKA components can be measured by MRI as accurately as by CT.
BACKGROUND AND PURPOSE: The aim of this study was to investigate the potential of MRI to determine rotational alignment after TKA in comparison to the gold standard, CT. METHODS: Rotational alignment was measured in the transverse plane on CT and MR-images in 14 patients prior to TKA revision. Differences between CT and MRI measurements were analysed. RESULTS: There was a strong correlation between CT and MRI measurements for both the tibial (r = 0.929) and femoral (r = 0.942) components with a mean difference of 0.47 ± 1.3 and 0.13 ± 3.2 degrees, respectively. INTERPRETATION: Despite artefact formation, it can be concluded that the rotational alignment of metallic TKA components can be measured by MRI as accurately as by CT.
Entities:
Keywords:
AP Knee-recording; CT; MRI; Rotational alignment; Total knee arthroplasty
Authors: Femke F Schröder; Corine E Post; Frank-Christiaan B M Wagenaar; Nico Verdonschot; Rianne M H A Huis In't Veld Journal: J Magn Reson Imaging Date: 2019-07-22 Impact factor: 4.813
Authors: Femke F Schröder; Corine E Post; Sjoerd M van Raak; Frank F J Simonis; Frank-Christiaan B M Wagenaar; Rianne M H A Huis In't Veld; Nico Verdonschot Journal: J Exp Orthop Date: 2020-07-31