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Rehabilitation Practice and Science

Translated Title

小兒麻痺患者正中神經之感覺神經遠端潛伏期

Abstract

It has benn recognized that overuse of wrist may induce abnormal median nerve. Most of the poliomyelitis patients compensate the weakness of the lower extremities by overusing their upper extremities, so that they were expected to have a higher incidence of abnormal median nerve.Totally 70 cases including 24 men and 46 women attended for this study. They were divided into three groups: group I , 34 poliomyelitis patients who used crutches; group II ,15 poliomyelitis patients who did not use crutches; group III , 21 normal control. The mean ages were 27.6 years in group I , 26.5 years in group II and 27.3 years in group III . Under the room temperature of 23-25 °C , distal sensory latency (DSL) measured by an antidromic method and fixed at 14cm from wrist to index finger were investigated in bilateral median nerves for each case. The results showed DSL was 2.92±0.49msec in group I . 2.66±0.36msec in group II and 2.42±0.31msec in group III . An abnormal median nerve was highly suspected in a prolonged DSL longer than the upper normal limit of 3.4msec. Both poliomyelitis patients groups had significantly prolonged distal sensory latency (group I vs group III , p＜0.01; group II vs group III, p＜0.05). The incidence of abnormal median nerve was 14.7% in group I , 6.7% in group II and 0% in group III . It meant that crutch-using group had a higher incidence of abnormal median nerve. Furthermore, according to the duration of crutch-using, group I was divided into three subgroups: group A, 2 cases (4 hands), using the crutches less than 10 years; group B, 17 cases (34 hands), using the crutches for 10-20 years; group C, 15 cases (30 hands), using the crutches more than 20 years. The incidence of abnormal median nerve of each subgroup was: group A, 0%; group B, 8.8% (3/34 hands), group C, 23.3% (7/30 hands). It indicates the longer they used crutches, the higher incidence they got abnormal median nerve. In addition, Lofstrand crutch users had a higher incidence of abnormal median nerve than axillary-crutch users (p＜0.05).

Language

Traditional Chinese

First Page

12

Last Page

16

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