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Journal of the Korean Academy of Rehabilitation Medicine 1999;23(5):1000-1006.
Postoperative Follow-up Study of F-wave and H-reflex on Lumbosacral Radiculopathy Caused by Disc Herniation.
Kim, Yeung Ki , Ahn, Sang Ho , Ahn, Myun Whan , Ha, Jeong Sang
1Department of Rehabilitation Medicine, Yeungnam University College of Medicine.
2Department of Orthopedic Medicine, Yeungnam University College of Medicine.
3Department of Neurology, Yeungnam University College of Medicine.
요추간판 탈출증으로 인한 신경근병증에서 수술 후 F파, H반사 추적검사
김영기, 안상호, 안면환1, 하정상2
영남대학교 의과대학 재활의학과, 1정형외과학교실 및 2신경과학교실

To explore the clinical value of postoperative follow-up examination of F-wave and H-reflex in patients with lumbosacral radiculopathy and to clarify optimal timing of follow-up examination.

The subjects were 17 patients with unilateral lumbosacral radiculopathy caused by disc herniation. In patients with the L5 radiculopathy, F-waves were obtained from extensor digitorum brevis and six parameters including minimal latency per height were used. In patients with the S1 radiculopathy, H-reflexes were obtained from gastrocnemius and amplitude and minimal latency were used as parameters. These parameters were evaluated preoperatively and postoperatively at week 1, 3, 6. These changes of the parameters and clinical findings were related.

The parameters of peroneal F-wave and tibial H-reflex showed significant improvement at 3 weeks and 6 weeks after surgery. The improvements of these parameters were not related with clinical improvement at 1 week after operation, but these were significantly related with improvement of pain and muscle weakness at 3 weeks after operation.

These findings suggested that follow-up examination of F-wave and H-reflex were valuable for objective assessment of lumbosacral radiculopathy after operation and the optimal timing for follow-up study was 3 weeks after operation.

Key Words: Follow-up study, F-wave, H-reflex, Lumbosacral radiculopathy


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