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J Crit Spine Cases 2012 Nov; 5(2): 53-55
Contralateral Motor Weakness after Ipsilateral Lumbar Decompression
Hyeong-Ki Shim, MD and Kyung-Chul Choi, MD, PhD
Department of Neurosurgery, Seoul Wooridul Spine Hospital, Seoul, Korea
Lumbar disc surgery has very high success rates and neurological complications associated with them are extremely unusual. We experienced unexpected contralateral neurological deficits after ipsilateral lumbar decompression. In first case, right leg symptom with left lumbar disc herniation presented. In second case, left leg symptom with bilateral disc herniation presented. The patients underwent only decompression of symptomatic side. Postoperatively, contralateral motor weakness developed. We tried to decompress contralateral side at postoperative day 1. In both cases, the contralateral nerve was found to be anchored by fibrous tissue and compressed by disc herniation. Furthermore, after decompression of the contralateral nerve root, motor weakness improved immediately and completely. In rare cases, traction force to contralateral nerve may induce neurological symptoms after ipsilateral decompression when the contralateral nerve is tethered to a herniated disc by fibrous tissue.
Contralateral motor weaknessㆍIpsilateral lumbar decompressionㆍTraction force
J Crit Spine Cases 2012 Nov; 5(2): 53-55

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