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Rehabilitation Practice and Science

Translated Title

肘關節角度對尺神經運動神經傳導檢查之影響

Abstract

The purpose of this study is to investigate the effect of elbow position on segmental motor nerve conduction velocity (MNCV) of ulnar nerve and compound motor action potential (CMAP) pick up on abductor digiti minimi. The study was performed on 38 ulnar nerves of 19 healthy persons under 4 different joint angles (FE: full extension, F45: flexion 45°, F90: flexion 90°, FF: full flexion). The results show: (1) The latency, amplitude and area of CMAP are all not affected by elbow position. (2) The ulnar MNCV of across elbow segment (AcV) and forearm segment (FV) and the measured length of across elbow segment (D) increased with the flexion angle of elbow joint significantly. (3) The mean values of (AcV/FV) x 100% under the elbow positions FE, F45, F90 and FF are 83.40%, 91.20%, 102.16% and 108.53% respectively. The increasing value of AcV/FV is related to the increasing elbow flexion angle. The most important affecting factor is the length of the across elbow segment (D), which is also related to the increasing elbow flexion angle, but not the forearm segment.Except investigating and analyzing the data, we establish the value of AcV/FV and the ””Mean and Standard Deviation”” of AcV, FV and absolute value of difference between left side and right side. According to the study, we expect to standarize the elbow position in detecting the ulnar neuropathy around the elbow.

Language

Traditional Chinese

First Page

17

Last Page

23

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