Vaulting quantification during level walking of transfemoral amputees

Autor: Coralie Villa, Xavier Bonnet, Hélène Pillet, Xavier Drevelle, Pascale Fodé, Isabelle Loiret
Přispěvatelé: CERAH, Laboratoire de biomécanique (LBM), Université Paris 13 (UP13)-Université Sorbonne Paris Cité (USPC)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS), Proteor, Institut Régional de Médecine Physique et de Réadaptation Louis Pierquin [Nancy] (IRR Louis Pierquin), This study was supported by the French National Research Agency,under reference ANR-2010-TECS-020. The authors are deeply gratefulto F. Lavaste, N. Martinet, J. Paysant, and N. Rapin for their contributionto the study.
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Clinical Biomechanics
Clinical Biomechanics, Elsevier, 2014, 29, pp.679-683. ⟨10.1016/j.clinbiomech.2014.04.006⟩
ISSN: 0268-0033
1879-1271
DOI: 10.1016/j.clinbiomech.2014.04.006⟩
Popis: 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 single-limb support phase. The aim of the study is to propose a method to quantify vaulting of transfemoral amputees. Methods: 17 transfemoral amputees and 28 asymptomatic subjects participated in the data collection. Kinematics and kinetics of thewhole bodywere recordedwhile subjectswerewalking on a level surface. Biomechanical gait analysis was focused on a reduced set of parameters linked to the contralateral ankle, the contralateral knee and the trajectory of the center of pressure. The patients were classified in two groups: with orwithout vaulting using video recordings. Differences between both groups and the control group were analyzed. Findings: A higher generated ankle powerwas found during the single support phase of the contralateral limb of transfemoralamputees presenting vaulting. These subjects presented also a higher dissipated knee flexion power before the peak in ankle flexion power. The trajectory of the center of pressurewas also modified by the vaulting. Interpretation: Vaulting for transfemoral amputees is characterized by a propulsive plantar flexion at the contralateral ankle. Quantifying the ankle flexion power during the contralateral single support phase will help in understanding vaulting. This study was supported by the French National Research Agency, under reference ANR-2010-TECS-020. The authors are deeply grateful to F. Lavaste, N. Martinet, J. Paysant, and N. Rapin for their contribution to the study.
Databáze: OpenAIRE
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