Abstract

Overuse of the nonparetic upper extremity can lead to entrapment neuropathies in chronic stroke patients. However, little is known about the effects of cane use in subacute stage of stroke. The aim of this study was to investigate the short-term effects of cane use on the upper extremity nerves in subacute stroke patients recovering from a bedridden state. Thirty subacute hemiparetic stroke patients who were initially bedridden participated when they were able to walk with a cane. Symptoms and signs related to the median or ulnar nerves were checked, and nerve conduction studies were performed. The largest cross-sectional area (CSA) of these nerves from the wrist to elbow was measured with ultrasound. After 3 weeks of cane use, electrophysiologic and ultrasonographic reevaluation was performed. Nerve conduction studies and CSA of the nerves at the nonparetic upper extremity showed significant changes, whereas those of the hemiparetic upper extremity did not. Walking with a cane for a short period can induce the enlargement of the median and ulnar nerves at the nonparetic extremity of subacute hemiparetic stroke patients. Attention should be placed on correct cane usage from the beginning of rehabilitation.

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