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Lower limb movement asymmetry measurement with a depth camera.

Abstract : The gait movement seems simple at first glance, but in reality it is a very complex neural and biomechanical process. In particular, if a person is affected by a disease or an injury, the gait may be modified. The left-right asymmetry of this movement can be related to neurological diseases, segment length differences or joint deficiencies. This paper proposes a novel method to analyze the asymmetry of lower limb movement which aims to be usable in daily clinical practice. This is done by recording the subject walking on a treadmill with a depth camera and then assessing left-right depth differences for the lower limbs during the gait cycle using horizontal flipping and registration of the depth images half a gait cycle apart. Validation on 20 subjects for normal gait and simulated pathologies (with a 5 cm sole), showed that this system is able to distinguish the asymmetry introduced. The major interest of this method is the low cost of the material needed and its easy setup in a clinical environment.
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Submitted on : Friday, July 11, 2014 - 4:24:21 PM
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Edouard Auvinet, Franck Multon, Jean Meunier. Lower limb movement asymmetry measurement with a depth camera.. Annual International Conference of the IEEE - Engineering in Medicine and Biology Society (EMBC), Aug 2012, SanDiego (CA), United States. pp.6793-6796, ⟨10.1109/EMBC.2012.6347554⟩. ⟨hal-01023234⟩



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