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Caractérisation biomécanique des différents mécanismes impliqués dans l'instabilité chronique de la cheville

Abstract : Chronic Ankle Instability (CAI) is a possible functional complication consecutive to a lateral ankle sprain and is defined by a feeling of ankle “giving way”, subjectively described, which corresponds to a flinch of this joint during its loading. In order to improve CAI characterization, it is important to submit objectives measures.The objective of this work is to globally assess the different mechanisms involved in CAI, during several functional tasks. A comparison between asymptomatic subjects and subjects with CAI is made about functional abilities.Results highlight several characteristic mechanisms that attest of an increase of ankle sprain and lateral instabilities risks. These mechanisms affect postural control of people complaining CAI, and result in an alteration of proprioceptive system, useful in movement and positioning regulation of body segments, and an alteration of muscular system, which generates force and stabilizes the ankle joint. Central adaptations illustrating a protective strategy against prospective traumatic movements are also suggested by the results.Tests used in this work can provide objective information about CAI to the therapists. Efficiency of these tests to characterize CAI is demonstrated, but they could also be used as an initial or final diagnostic during a rehabilitation program. Indeed, these new information can complete the patient historic and could adduce an objective regard to the characterization of a pathology initially described subjectively by the patient.
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Submitted on : Tuesday, February 9, 2016 - 10:11:16 AM
Last modification on : Tuesday, November 23, 2021 - 9:45:04 AM
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  • HAL Id : tel-01271356, version 1


Raphaël Pionnier. Caractérisation biomécanique des différents mécanismes impliqués dans l'instabilité chronique de la cheville. Ingénierie biomédicale. Université de Valenciennes et du Hainaut-Cambresis, 2015. Français. ⟨NNT : 2015VALE0033⟩. ⟨tel-01271356⟩



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