Direct continuous electromyographic control of a powered prosthetic ankle for improved postural control after guided physical training: A case study
Direct continuous electromyographic control of a powered prosthetic ankle for improved postural control after guided physical training: A case study
复制标题
对动力假肢踝关节进行直接连续肌电图控制，以改善引导体育训练后的姿势控制：案例研究
DOI：
10.1017/wtc.2021.2
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发表时间：
2021
影响因子：
--
通讯作者：
Huang, He Helen
中科院分区：
文献类型：
--
作者：
Fleming, Aaron;Huang, Stephanie;Buxton, Elizabeth;Hodges, Frank;Huang, He Helen
尽管有动力下肢假肢的前景，但现有的控制器并不能帮助许多需要根据人体状态和环境连续控制假肢关节的日常活动。本病例研究的目的是探讨直接、连续肌电图（dEMG）控制动力踝关节假体的可行性，并结合物理治疗师指导的训练，以改善胫骨截肢患者的站立姿势控制。具体来说，残余拮抗肌肉（即腓肠肌外侧和胫骨前肌）的肌电信号被用来按比例驱动气动人工肌肉来移动假脚踝。临床活动用于对照范例的培训和评估方案。我们量化了双侧小腿肌肉的肌电图信号以及姿势控制和稳定性的测量。与参与者的日常被动假体相比，demg控制的踝关节与训练相结合，获得了更好的临床平衡评分，减少了完整关节的代偿。双侧压力中心偏移的相互相关系数（一种量化站立姿势控制的指标）增加到0.83(±。07)使用dEMG踝关节控制（被动装置：0.39（±0.29））。我们观察到同源肌肉的同步激活，在负荷转移任务训练的第一天表现迅速改善，并且在训练期间表现进一步改善（p = 0.006）。本案例研究显示了动力踝关节假体的dEMG控制模式的可行性，以辅助姿势控制。本研究为未来的研究奠定了基础，通过纳入更多的参与者和活动来扩展这些结果。
Despite the promise of powered lower limb prostheses, existing controllers do not assist many daily activities that require continuous control of prosthetic joints according to human states and environments. The objective of this case study was to investigate the feasibility of direct, continuous electromyographic (dEMG) control of a powered ankle prosthesis, combined with physical therapist-guided training, for improved standing postural control in an individual with transtibial amputation. Specifically, EMG signals of the residual antagonistic muscles (i.e. lateral gastrocnemius and tibialis anterior) were used to proportionally drive pneumatical artificial muscles to move a prosthetic ankle. Clinical-based activities were used in the training and evaluation protocol of the control paradigm. We quantified the EMG signals in the bilateral shank muscles as well as measures of postural control and stability. Compared to the participant’s daily passive prosthesis, the dEMG-controlled ankle, combined with the training, yielded improved clinical balance scores and reduced compensation from intact joints. Cross-correlation coefficient of bilateral center of pressure excursions, a metric for quantifying standing postural control, increased to .83(±.07) when using dEMG ankle control (passive device: .39(±.29)). We observed synchronized activation of homologous muscles, rapid improvement in performance on the first day of the training for load transfer tasks, and further improvement in performance across training days (p = .006). This case study showed the feasibility of this dEMG control paradigm of a powered prosthetic ankle to assist postural control. This study lays the foundation for future study to extend these results through the inclusion of more participants and activities.
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DOI：
10.1109/tnsre.2019.2922102
发表时间：
2019-07-01
影响因子：
4.9
作者：
Fleming, Aaron;Huang, Stephanie;Huang, He
通讯作者：
Huang, He
影响因子：
2.5
作者：
Dionisio, Valdeci Carlos;Almeida, Gi Luicio;Hirata, Rogerio Pessoto
通讯作者：
Hirata, Rogerio Pessoto
影响因子：
1.1
作者：
Latash ML
通讯作者：
Latash ML
胫骨截肢者残余拮抗肌的自主控制：相互激活、共激活以及对动力下肢假肢直接神经控制的影响
影响因子：
4.9
作者：
Stephanie Huang;H. Huang
通讯作者：
H. Huang
DOI：
--
发表时间：
2009
期刊：
Annual International Conference of the IEEE Engineering in Medicine and Biology Society
影响因子：
--
作者：
Levi J. Hargrove;He Huang;A. Schultz;Blair A. Lock;Robert D. Lipschutz;T. Kuiken
通讯作者：
T. Kuiken