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KMID : 1001920150570020123
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Journal of Korean Neurosurgical Society
2015 Volume.57 No. 2 p.123 ~ p.126
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Decompression of the Sciatic Nerve Entrapment Caused by Post-Inflammatory Scarring
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Son Byung-Chul
Kim Deog-Ryeong
Jeun Sin-Soo
Lee Sang-Won
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Abstract
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A rare case of chronic pain of entrapment neuropathy of the sciatic nerve successfully relieved by surgical decompression is presented. A 71-year-old male suffered a chronic right buttock pain of duration of 7 years which radiating to the right distal leg and foot. His pain developed gradually over one year after underwenting drainage for the gluteal abscess seven years ago. A cramping buttock and intermittently radiating pain to his right foot on sitting, walking, and voiding did not respond to conventional treatment. An MRI suggested a post-inflammatory adhesion encroaching the proximal course of the sciatic nerve beneath the piriformis as it emerges from the sciatic notch. Upon exploration of the sciatic nerve, a fibrotic tendinous scar beneath the piriformis was found and released proximally to the sciatic notch. His chronic intractable pain was completely relieved within days after the decompression. However, thigh weakness and hypesthesia of the foot did not improve. This case suggest a need for of more prompt investigation and decompression of the chronic sciatic entrapment neuropathy which does not improve clinically or electrically over several months.
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KEYWORD
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Entrapment neuropathy, Neurolysis, Piriformis, Sciatic nerve
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