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Unilateral lower limb amputees : standing posture modalities and biomechanical characterization of the ankle joint torque in the intact limb

Abstract : This Ph.D. thesis aims to evaluate the standing posture modalities and the ankle joint torque in the intact limb in unilateral lower limb amputees. A first study shows the presence of three posture modalities: the non-amputee group relied on standing erect, the transfemoral amputees’ stance depended on balance control and the transtibial amputees exhibited a mixed modality of simultaneously maintaining an upright stance and standing balance. Since the ankle muscles have a functional importance in standing posture modalities, it is imperative to investigate the ankle joint torque in the intact limb. However, the current devices used to assess the ankle joint present substantial limitations for the measurement. Thus, a second study was designed to develop and to validate a new ankle ergometer B.O.T.T.E. Moreover, a third study was achieved in order to estimate the effect of visual feedback on enhancing isometric maximal voluntary contractions. A fourth study was realized to investigate the ankle joint torque in the intact leg of unilateral lower limb amputees. The results show that transfemoral amputees produce less torque and are less steady compared to transtibial amputees and able-bodied individuals. Overall, the present findings of this Ph.D. thesis could have implications for clinical practice and for rehabilitation of patients with a lower limb amputation.
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Submitted on : Tuesday, October 5, 2021 - 3:43:35 PM
Last modification on : Tuesday, October 19, 2021 - 6:38:14 PM

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  • HAL Id : tel-03366245, version 1

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Anis Toumi. Unilateral lower limb amputees : standing posture modalities and biomechanical characterization of the ankle joint torque in the intact limb. Biomechanics [physics.med-ph]. Université de Valenciennes et du Hainaut-Cambrésis, 2018. English. ⟨NNT : 2018VALE0024⟩. ⟨tel-03366245⟩

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