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Rehabilitation Practice and Science

Translated Title

南台灣騎自行車者之潛在性腓淺感覺神經病變

Abstract

The purpose of this study is designed to assess the superficial peroneal sensory nerve conduction of bicyclists since some bicyclists experience tingling or numbness over the dorsum of the foot during prolonged bicycling. Bilateral superficial peroneal nerve conduction studies were performed on 17 bicyclists compared with 20 normal subjects. Compound nerve action potentials were recorded with surface electrodes over the medial and intermediate dorsal cutaneous branches of the superficial peroneal nerves located at the anterior aspect of the ankle. The superficial peroneal nerve (SPN) was stimulated at the anterolateral aspect of the leg 12 cm proximal to the site of active recording electrode. One of our subjects (2.7%, 1/37) failed to show the response of the intermediate branch of the SPN. The distal latency of either branch of the SPN was significantly longer (p＜0.01) in the bicyclists (3.38±0.30 ms for medial branch and 3.34±0.35 ms for intermediate branch) than that in the normal controlSubjects (3.10±0.23 ms for medial branch and 3.08±0.25 ms for intermediate branch). Using “mean plus 2 SD” of the control subject as the upper normal limit, 11 bicyclists (64.7%) had abnormal distal latencies either in the medial or in the intermediate branches of the SPN. There was no significant difference (p＞0.05) in the amplitude of nerve action potential between bicycle (11.54 ± 4.50μv for medial branch and 9.57 ± 4.39μv for intermediate branch) and control groups (13.58 ± 4.92μv for medial branch and 11.77 ± 5.97μv for intermediate branch). All the bicyclists had the habit of excessive ankle motion. Therefore, the repetitive ankle motion in bicyclists may lead to the neuropathy of the SPN.

Language

English

First Page

27

Last Page

32

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