Journal of Rehabilitation and Assistive Technologies Engineering | |
The influence of a microprocessor-controlled hydraulic ankle on the kinetic symmetry of trans-tibial amputees during ramp walking: A case series: | |
MichaelMcGrath1  | |
关键词: Microprocessor foot; hydraulic ankle; ramp; symmetry; support moment; | |
DOI : 10.1177/2055668318790650 | |
学科分类:工程和技术(综合) | |
来源: Sage Journals | |
【 摘 要 】
IntroductionAsymmetrical limb loading is believed to cause health problems for lower limb amputees and is exacerbated when walking on slopes. Hydraulically damped ankle-feet improve ground compliance on slopes compared to conventional prosthetic feet. Microprocessor-controlled hydraulic ankle-feet provide further adaptation by dynamically adjusting viscoelastic damping properties.MethodUsing a case series design, gait analysis was performed with four trans-tibial amputees. There were two walking conditions (ramp ascent and descent) and two prosthetic foot conditions (microprocessor-control on and off – MPF-on and MPF-off). Total support moment integral (MIsup) and degree-of-asymmetry were compared across foot conditions.ResultsDuring ramp descent, the transition of prosthetic ankle moment from dorsiflexion to plantarflexion occurred earlier in stance phase with MPF-on, slowing the angular velocity of the shank. During ramp ascent, the MPF-on dorsiflexion/plantarflexion moment transition occurred later, me...
【 授权许可】
CC BY
【 预 览 】
Files | Size | Format | View |
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RO201904025529806ZK.pdf | 393KB | download |