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Journal of the Korean Academy of Rehabilitation Medicine 1999;23(6):1191-1198.
Median Nerve Conduction Study in different Wrist Position in Normal Persons and the Patients with Diabetes mellitus.
Yoo, Doo Sik , Chong, Soon Yeol , Chung, Jin Sang
Department of Rehabilitation Medicine, College of Medicine, Konkuk University.
정상인 및 당뇨환자에서 완관절의 자세가 정중신경 전도에 미치는 영향
유두식, 정순열, 정진상
건국대학교 의과대학 재활의학교실
Abstract

Objective
To determine whether flexion and extension of the wrist joint produce the change in the conduction study of the median nerve in the normal and diabetic patients, and to compare the susceptibility of median nerve compression injury in two groups.


Method
Thirty healthy adults as control and thirty diabetic patients without carpal tunnel syndrome were studied. The wrist joint was maintained in flexion or extension position for 5 minutes before performing conduction study. The variables used for statistical analysis included the mean difference of amplitude and latency in median motor and sensory responses in neutral, flexion, and extension positions.


Results
The results showed that significant differences in the latency and amplitude of median motor and sensory responses between neutral, extension, and flexion of wrist within each group (p<0.01). The differences in the median sensory latency (p<0.01), amplitude (p<0.05) and the change of wrist-palm segmental conduction velocity (p<0.01) were statistically significant between the diabetes and the normal control.


Conclusion
The results of this study suggest that median nerves are susceptible to compression pressure in diabetic patients. Therefore, the position of the wrist joint should be considered in the median nerve conduction study.

Key Words: Median nerve, Wrist joint positioning, Carpal tunnel syndrome, Diabetes


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