Leif Claassen1, Philipp Luedtke2, Daiwei Yao3, Sarah Ettinger4, Kiriakos Daniilidis5, Andrej M Nowakowski6, Magdalena Mueller-Gerbl7, Christina Stukenborg-Colsman8, Christian Plaass9. 1. Orthopedic Department of the Hannover Medical School at DIAKOVERE Annastift, Germany. Electronic address: leif.claassen@diakovere.de. 2. Orthopedic Department of the Hannover Medical School at DIAKOVERE Annastift, Germany. Electronic address: philipp.luedtke@stud.mh-hannover.de. 3. Orthopedic Department of the Hannover Medical School at DIAKOVERE Annastift, Germany. Electronic address: daiwei.yao@diakovere.de. 4. Orthopedic Department of the Hannover Medical School at DIAKOVERE Annastift, Germany. Electronic address: sarah.ettinger@diakovere.de. 5. Sporthopaedicum Straubing, Straubing, Germany. Electronic address: kraj@gmx.de. 6. Orthopedic Department, University Hospital Basel, Switzerland. Electronic address: andrej.nowakowski@usb.ch. 7. Institute of Anatomy, University of Basel, Switzerland. Electronic address: m.mueller-gerbl@unibas.ch. 8. Orthopedic Department of the Hannover Medical School at DIAKOVERE Annastift, Germany. Electronic address: christina.stukenborg@diakovere.de. 9. Orthopedic Department of the Hannover Medical School at DIAKOVERE Annastift, Germany. Electronic address: christian.plaass@diakovere.de.
Abstract
BACKGROUND: Despite intensive research there is no consensus about the talocrural joint axis. The aim of the present study is a new method to determinate the geometric rotational axis of the talocrural joint. METHODS: We analyzed 98 CT-scans of full cadaver Caucasian legs. We generated three-dimensional reconstruction models of the talus. A best fitting cone was orientated to the talar articular surface. The geometric rotational axis was defined to be the axis of this cone. RESULTS: The geometric rotational axis of the talocrural joint is orientated from lateral-distal to medial-proximal (85.6°±10 compared to anatomical tibial axis in torsional plane), from posterior-distal to anterior-proximal (81.43°±44.35 compared to anatomical tibial axis in sagittal plane) and from posterior-medial to anterior-lateral (169.2°±5.91 compared to intermalleolar axis in axial plane). CONCLUSIONS: The consideration of our results might be helpful for better understanding of ankle biomechanics.
BACKGROUND: Despite intensive research there is no consensus about the talocrural joint axis. The aim of the present study is a new method to determinate the geometric rotational axis of the talocrural joint. METHODS: We analyzed 98 CT-scans of full cadaver Caucasian legs. We generated three-dimensional reconstruction models of the talus. A best fitting cone was orientated to the talar articular surface. The geometric rotational axis was defined to be the axis of this cone. RESULTS: The geometric rotational axis of the talocrural joint is orientated from lateral-distal to medial-proximal (85.6°±10 compared to anatomical tibial axis in torsional plane), from posterior-distal to anterior-proximal (81.43°±44.35 compared to anatomical tibial axis in sagittal plane) and from posterior-medial to anterior-lateral (169.2°±5.91 compared to intermalleolar axis in axial plane). CONCLUSIONS: The consideration of our results might be helpful for better understanding of ankle biomechanics.
Authors: Justus Schock; Daniel Truhn; Darius Nürnberger; Stefan Conrad; Marc Sebastian Huppertz; Sebastian Keil; Christiane Kuhl; Dorit Merhof; Sven Nebelung Journal: Sci Rep Date: 2021-12-01 Impact factor: 4.379