4.7 Article

Shoulder Joint Hybrid Assistive Limb Treatment for Chronic Stroke Patients with Upper Limb Dysfunction

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JOURNAL OF CLINICAL MEDICINE
卷 12, 期 3, 页码 -

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MDPI
DOI: 10.3390/jcm12031215

关键词

hybrid assistive limb (HAL); shoulder; rehabilitation; robotic rehabilitation; stroke; upper limb impairment

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Upper extremity dysfunction after stroke can be improved through rehabilitation using a shoulder joint hybrid assistive limb (HAL). This study showed that HAL assisted shoulder movement and improved shoulder muscle strength, voluntary and passive shoulder joint range of motion, as well as overall upper limb function in patients with chronic stroke and upper extremity functional disability. The safety and effectiveness of HAL in motor learning were also demonstrated.
Upper extremity dysfunction after stroke affects quality of life. Focusing on the shoulder joint, we investigated the safety and effectiveness of rehabilitation using a shoulder joint hybrid assistive limb (HAL). Eight patients with chronic stroke and upper extremity functional disability were enrolled and used a shoulder joint HAL, which assisted shoulder movement based on the user's intention, through myoelectric activation of the shoulder flexor. Ten training sessions of 30-40 min each were performed to assist voluntary movement of upper limb elevation on the affected side through triggering the deltoid muscle. All patients completed the interventions without shoulder pain. Surface electromyography evaluation indicated post-intervention improvement in coordinated movement of the affected upper extremity. Significant improvements in voluntary and passive shoulder joint range of motion were obtained after the intervention, suggesting improvement in shoulder muscle strength. A significant decrease in the modified Ashworth scale and improvements in functional scores in the upper limb were also observed. Along with safe use for our study patients, the shoulder HAL provided appropriate motor learning benefits. Improvements in shoulder joint function and whole upper limb function were observed, suggesting that HAL could be an optimal treatment method.

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