Reference : Use of a Computed Tomography Based Approach to Validate Noninvasive Devices to Measur...
Scientific journals : Article
Engineering, computing & technology : Mechanical engineering
http://hdl.handle.net/10993/23229
Use of a Computed Tomography Based Approach to Validate Noninvasive Devices to Measure Rotational Knee Laxity
English
Neumann, Simon mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Maas, Stefan mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Waldmann, Danièle mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Ricci, Pierre-Louis mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Engineering Research Unit >]
Zürbes, Arno mailto [Fachhochschule Bingen]
Arnoux, Pierre-Jean mailto [Université de la Méditerranée > Laboratoire de Biomécanique Appliquée]
Frédéric, Walter mailto [Centre Hospitalier du Luxembourg > Clinique d'Eich]
Jens, Kelm mailto [Chirurgisch-Orthopädisches Zentrum - Illingen > > > ; Klinik für Orthopädie und Orthopädische Chirurgie - Universitätsklinikum des Saarlandes]
2015
International Scholarly Research Notices
Hindawi Publishing Corporation
Yes (verified by ORBilu)
International
2356-7872
New York
NY
[en] rotational knee laxity ; noninvasive measurement device ; computed tomography
[en] The purpose of this study is to validate a noninvasive rotational knee laxity measuring device called “Rotameter P2” with an approach based on Computed Tomography (CT). This CT-approach using X-rays is hence invasive and can be regarded as a precise reference method that may also be applied to similar devices. An error due to imperfect femur fixation was observed but can be neglected for small torques. The most significant estimation error is due to the unavoidable soft tissues rotation and hence flexibility in the measurement chain. The error increases with the applied torque.The assessment showed that the rotational knee angle measured with the Rotameter is still overestimated because of thigh and femur displacement, soft tissues deformation, and measurement artefacts adding up to a maximum of 285% error at +15Nm for the Internal Rotation of female volunteers. This may be questioned if such noninvasive devices for measuring the Tibia-Femoral Rotation (TFR) can help diagnosing knee pathologies and investigate ligament reconstructive surgery.
University of Luxembourg: Research Unit of Engineering Sciences (RUES)
Fonds National de la Recherche - FnR
Researchers ; Professionals ; Students ; General public
http://hdl.handle.net/10993/23229
10.1155/2015/705201
http://www.hindawi.com/journals/isrn/2015/705201/

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