Paraplegic standing supported by FES-controlled ankle stiffness
نویسندگان
چکیده
منابع مشابه
Reducing the upper body effort during FES-assisted arm-supported standing up in paraplegic patients
In this work, the effects of the artificial ankle joint stiffness on the performance of sit-to-stand movement and upper body effort have been assessed during FES-assisted arm-supported standing up in paraplegic patients. An ankle-foot orthosis (AFO) was developed with the plantar-assisting spring. By changing the spring, the rigidity of the AFO could be adjusted. Experimental results on two com...
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In this paper we present a method to generate optimal stimulation pattern for walker-assisted paraplegic walking using FES systems. To determine the stimulation patterns, a musculoskeletal model of walker-assisted FES-supported paraplegic walking is introduced. The optimal stimulation patterns are determined through minimizing the trajectory tracking error of the lower body and mechanical energ...
متن کاملAnkle muscle stiffness alone cannot stabilize balance during quiet standing.
This communication addresses again the hypothesis that the stabilization of balance during quiet standing is achieved by the stiffness of ankle muscles without anticipatory active control. It is shown that a recently proposed method of estimating ankle stiffness directly from the analysis of the posturographic data is incorrect because it ignores the modulation of motoneuronal activity and gros...
متن کاملArm-free paraplegic standing--Part I: Control model synthesis and simulation.
The following paper is the first part of our investigation into the feasibility of arm-free paraplegic standing. A novel control strategy for unsupported paraplegic standing which utilizes the residual sensory and motor abilities of the thoracic spinal cord injured subjects is proposed. The strategy is based on voluntary and reflex activity of the paraplegic person's upper body and artificially...
متن کاملIntrinsic ankle stiffness during standing increases with ankle torque and passive stretch of the Achilles tendon
Individuals may stand with a range of ankle angles. Furthermore, shoes or floor surfaces may elevate or depress their heels. Here we ask how these situations impact ankle stiffness and balance. We performed two studies (each with 10 participants) in which the triceps surae, Achilles tendon and aponeurosis were stretched either passively, by rotating the support surface, or actively by leaning f...
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ژورنال
عنوان ژورنال: IEEE Transactions on Neural Systems and Rehabilitation Engineering
سال: 2002
ISSN: 1534-4320,1558-0210
DOI: 10.1109/tnsre.2002.806830