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Journal of the Korean Academy of Rehabilitation Medicine 2000;24(2):237-241.
A Proximal Conducting Technique of Sural Nerve.
Ko, Young Jin , Kim, Hye Won , Kim, Jong Hyun , Choi, Jin Hong , Kim, Kyong Hwa , Choi, Yun Jung
Department of Rehabilitation Medicine, College of Medicine, The Catholic University of Korea.
근위부 비복신경 전도검사
고영진, 김혜원, 김종현, 최진홍, 김경화, 최윤정
가톨릭대학교 의과대학 재활의학교실
Abstract

Objective
The sural nerve is a sensory nerve in the lower extremity which is formed by the union of the medial sural cutaneous nerve of tibial nerve and the communicating branch of the common peroneal nerve. The objective of this study is to standardize the electrodiagnostic technique of proximal conduction of sural nerve and to investigate the usefulness of the technique in evaluation for the patients with peripheral neuropathy.


Method
Fifty eight extremities in 29 normal adults without the clinical signs and symptoms of peripheral neuropathy were evaluated with sural nerve conduction study. The active recording electrode was placed over 14 cm proximal to the lateral malleolus, and the reference electrode was placed over 4cm distal to the active electrode. The antidromic evoked responses were recorded with stimulation at points 7, 14, 21 cm proximal to the recording electrode and directly over the sural nerve.


Results
The mean values of proximal conduction study of sural nerve in normal adults were 2.40⁑1.03 msec for peak latency, 11.55⁑7.31μV in amplitude with stimulation at 7 cm proximal to the recording electrode; 3.43⁑0.78 msec for peak latency, 10.87⁑5.86μV in amplitude with stimulation at 14 cm; 4.51⁑0.83 msec for peak latency, 8.78⁑4.10μV in amplitude with stimulation at 21 cm.


Conclusion
A method of proximal conduction study of sural nerve was introduced which could be used as a valuable technique for the evaluation of peripheral neuropathy.

Key Words: Sural nerve, Proximal conducting technique


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