주관절 각도 변화에 따른 척골신경의 단분절 운동신경전도 검사
Short Segmental Motor Conduction Studies of Ulnar Nerve at the Elbow according to Different Elbow Angle
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Objectives: The purpose of this study is to investigate the effect of elbow position on conduction velocities of short segments across the elbow and to obtain optimal elbow position for short segmental ulnar motor conduction study. Methods: Short segmental motor conduction studies of ulnar nerve were performed in nondominant upper limbs of twenty-five healthy adults. For each upper limb, ulnar nerve was stimulated at 2 cm intervals from 4 cm below to 6 cm above the medial epicondyle with elbow position in extension and 45。, 90。, and 135。flexion. Results: Each short segment across the elbow showed statistically significant slowing of conduction velocities compared to that of forearm segment with elbow position in extension and 45。flexion (p<0.05). Each short segment across the elbow didn’t show statistically significant slowing of conduction velocities compared to that of forearm segment with elbow position in 90。and 135。flexion (p>0.05), except the segment between 2 cm below the medial epicondyle and medial epicondyle with elbow position in 90。flexion (p<0.05). Differences of nerve conduction velocity between forearm segment and each short segment across the elbow were minimal with elbow position from 90。to 135。flexion. Conclusion: This study suggest that the degree of elbow flexion should be maintained 135。full flexion in short segmental ulnar nerve conduction study.
Abstract
Objectives: The purpose of this study is to investigate the effect of elbow position on conduction velocities of short segments across the elbow and to obtain optimal elbow position for short segmental ulnar motor conduction study. Methods: Short segmental motor conduction studies of ulnar nerve were performed in nondominant upper limbs of twenty-five healthy adults. For each upper limb, ulnar nerve was stimulated at 2 cm intervals from 4 cm below to 6 cm above the medial epicondyle with elbow position in extension and 45。, 90。, and 135。flexion. Results: Each short segment across the elbow showed statistically significant slowing of conduction velocities compared to that of forearm segment with elbow position in extension and 45。flexion (p<0.05). Each short segment across the elbow didn’t show statistically significant slowing of conduction velocities compared to that of forearm segment with elbow position in 90。and 135。flexion (p>0.05), except the segment between 2 cm below the medial epicondyle and medial epicondyle with elbow position in 90。flexion (p<0.05). Differences of nerve conduction velocity between forearm segment and each short segment across the elbow were minimal with elbow position from 90。to 135。flexion. Conclusion: This study suggest that the degree of elbow flexion should be maintained 135。full flexion in short segmental ulnar nerve conduction study.
참고문헌 (28)
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