Continuous relative phases of walking with an articulated passive ankle–foot prosthesis in individuals with a unilateral transfemoral and transtibial amputation: an explorative case–control study

BioMedical Engineering OnLine

Research

Pierre Cherelle¹  Felipe Gomez¹  Bram Vanderborght²  Jean-Pierre Baeyens³  Bruno Tassignon⁴  Kevin De Pauw⁵  Romain Meeusen⁵  Elke Lathouwers⁵ 

[1] Axiles Bionics, 1130, Brussels, Belgium;Brussels Human Robotics Research Center (BruBotics), Vrije Universiteit Brussel, 1050, Brussels, Belgium;Robotics Research Group, Vrije Universiteit Brussel and IMEC, Brussels, Belgium;Experimental Anatomy Research Group, Faculty of Physical Education and Physiotherapy, Vrije Universiteit Brussel, Brussels, Belgium;THIM, Internationale Hochschule Fur Physiotherapîe, Landquart, Switzerland;Faculty of Applied Engineering Sciences, Universiteit Antwerpen, Antwerp, Belgium;Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050, Brussels, Belgium;Human Physiology and Sports Physiotherapy Research Group, Vrije Universiteit Brussel, 1050, Brussels, Belgium;Brussels Human Robotics Research Center (BruBotics), Vrije Universiteit Brussel, 1050, Brussels, Belgium;

关键词: Lower-limb amputation;    Prosthesis;    Kinematics;    Biomechanics;   

DOI  :  10.1186/s12938-023-01074-2

 received in 2022-10-28, accepted in 2023-01-25,  发布年份 2023

来源: Springer

【 摘 要 】

BackgroundA mechanical ankle–foot prosthesis (Talaris Demonstrator) was developed to improve prosthetic gait in people with a lower-limb amputation. This study aims to evaluate the Talaris Demonstrator (TD) during level walking by mapping coordination patterns based on the sagittal continuous relative phase (CRP).MethodsIndividuals with a unilateral transtibial amputation, transfemoral amputation and able-bodied individuals completed 6 minutes of treadmill walking in consecutive blocks of 2 minutes at self-selected (SS) speed, 75% SS speed and 125% SS speed. Lower extremity kinematics were captured and hip–knee and knee–ankle CRPs were calculated. Statistical non-parametric mapping was applied and statistical significance was set at 0.05.ResultsThe hip–knee CRP at 75% SS walking speed with the TD was larger in the amputated limb of participants with a transfemoral amputation compared to able-bodied individuals at the beginning and end of the gait cycle (p = 0.009). In people with a transtibial amputation, the knee–ankle CRP at SS and 125% SS walking speeds with the TD were smaller in the amputated limb at the beginning of the gait cycle compared to able-bodied individuals (p = 0.014 and p = 0.014, respectively). Additionally, no significant differences were found between both prostheses. However, visual interpretation indicates a potential advantage of the TD over the individual's current prosthesis.ConclusionThis study provides lower-limb coordination patterns in people with a lower-limb amputation and reveals a possible beneficial effect of the TD over the individuals’ current prosthesis. Future research should include a well-sampled investigation of the adaptation process combined with the prolonged effects of the TD.

【 授权许可】

CC BY   
© The Author(s) 2023

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