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Journal of the Korean Academy of Rehabilitation Medicine 1998;22(2):415-420.
An Experimental Study on Usefulness of F Wave in Radiculopathy.
Han, Tai Ryoon , Kim, Jin Ho , Bang, Moon Suk , Lee, Shi Uk , Shin, Hyung Ik
1Department of Rehabilitation Medicine, Seoul National University College of Medicine.
2Department of Sports Medicine, Samsung Medical Center, Sungkyunkwan University College of Medicine.
신경근 병변에서의 F파의 유용성에 대한 실험적 연구
한태륜, 이시욱1, 신형익
서울대학교 의과대학 재활의학교실 및 1성균관대학교 의과대학 삼성서울병원 스포츠의학과
Abstract

The F wave has been thought to be useful in assessing the proximal neuropathy such as radiculopathy. However the sensitivity of F wave in radiculopathy is varying from 18% to 65%. The aim of this study is to compare the relative diagnostic value of 20 averaging technique and 20 sequential stimulation technique in recording the F waves and to determine the usefulness of F wave for the evaluation of radiculopathy.

Animals employed were rabbits that were divided into a study group of 17 rabbits(31 legs) and control group of 14 rabbits(25 legs). In the study group, the sciatic nerve was exposed after the dissection of gluteus maximus muscle and the nerve trunk was traced up to reach the spinal canal level. One of the two nerve roots composing the sciatic nerve was dissected randomly. F wave parameters were measured using both of 20 averaging technique and 20 sequential stimulation technique.

The parameters which showed significant change after the root dissection were the amplitude by employing 20 electronic averaging technique, and mean latency, minimal latency, mean amplitude by employing 20 sequential stimulation technique.

We concluded that 20 electronic averaging technique had no benefit over the 20 sequential stimulation technique and F wave measurement was not useful for the electrodiagnosis of radiculopathy because of the wide range of control values.

Key Words: F-wave, Radiculopathy, Electrodiagnosis


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