Mechanical work performed by individual limbs of transfemoral amputees during step-to-step transitions: Effect of walking velocity
Article dans une revue avec comité de lecture
The greater metabolic demand during the gait of people with a transfemoral amputation limits their autonomy and walking velocity. Major modifications of the kinematic and kinetic patterns of transfemoral amputee gait quantified using gait analysis may explain their greater energy cost. Donelan et al. proposed a method called the individual limb method to explore the relationships between the gait biomechanics and metabolic cost. In the present study, we applied this method to quantify mechanical work performed by the affected and intact limbs of transfemoral amputees. We compared a cohort of six active unilateral transfemoral amputees to a control group of six asymptomatic subjects. Compared to the control group, we found that there was significantly less mechanical work produced by the affected leg and significantly more work performed by the unaffected leg during the step-to-step transition. We also found that this mechanical work increased with walking velocity; the increase was less pronounced for the affected leg and substantial for the unaffected leg. Finally, we observed that the lesser work produced by the affected leg was linked to the increase in the hip flexion moment during the late stance phase, which is necessary for initiating knee flexion in the affected leg. It is possible to quantify the mechanical work performed during gait by people with a transfemoral amputation, using the individual limb method and conventional gait laboratory equipment. The method provides information that is useful for prosthetic fitting and rehabilitation.
Fichier(s) constituant cette publication
Cette publication figure dans le(s) laboratoire(s) suivant(s)
Visualiser des documents liés par titre, auteur, créateur et sujet.
Evolution of vaulting strategy during locomotion of individuals with transfemoral amputation on slopes and cross-slopes compared to level walking Article dans une revue avec comité de lectureVILLA, Coralie; DREVELLE, Xavier; BONNET, Xavier; LAVASTE, François; LOIRET, Isabelle; FODÉ, Pascale; PILLET, Hélène (Elsevier BV, 2015-07)Background: Vaulting is a walking strategy qualitatively characterized in clinics by the sound ankle plantiflexion in midstance to assist prosthetic foot clearance. Even though potentially harmful, this strategy is often ...
Influence of physical capacities of males with transtibial amputation on gait adjustments on sloped surfaces Article dans une revue avec comité de lectureLANGLOIS, Karine; VILLA, Coralie; BONNET, Xavier; LAVASTE, François; FODÉ, Pascale; MARTINET, Noël; PILLET, Hélène (Rehabilitation Research and Development Service, Department of Veterans Affairs, 2014)The aim of the study was to investigate how kinematic and kinetic adjustments between level and slope locomotion of persons with transtibial amputation are related to their individual muscular and functional capacities. A ...
Article dans une revue avec comité de lectureDREVELLE, Xavier; VILLA, Coralie; BONNET, Xavier; LOIRET, Isabelle; FODÉ, Pascale; PILLET, Hélène (Elsevier, 2014)Background: Vaulting is a gait compensatory mechanism used by transfemoral amputees to assist toe clearance during the prosthetic swing phase. It is defined by a plantar flexion of the contralateral ankle during the ...
Article dans une revue avec comité de lectureVILLA, Coralie; DAURIAC, Boris; BASCOU, Joseph; BONNET, Xavier; FODÉ, Pascale; PILLET, Hélène (Taylor & Francis, 2015)Unilateral transtibial amputation impairs locomotion, especially in daily living outdoor situations. As an example, slope ascent requires specific gait adjustments such as hip power generation during single support ...
Reliability quantification and gait loading asymmetry assessment with wearable insoles in transfemoral amputee people at different speeds Article dans une revue avec comité de lectureLOIRET, Isabelle; VILLA, Coralie; DAURIAC, Boris; BONNET, Xavier; LAVASTE, François; MARTINET, Noël; PAYSANT, Jean; PILLET, Hélène (Elsevier, 2016)Introduction Amputee people have gait defaults, as for example loading asymmetry, which increase with daily living situations. Replication of realistic daily living environment in a motion analysis laboratory (MAL) is ...