Sudden Paraplegia Caused by Nontraumatic Cervical Disc Rupture: A Case Report

: A 38-year-old man visited our Emergency Department for sudden onset paraplegia that occurred 1 hour ago. He felt a piercing pain in the posterior neck and became paraplegic while he was watching television, lying down on a sofa. Neurological examination showed motor power grades II-III in both arms and grade 0 in both legs. His cervical magnetic resonance imaging (MRI) showed a large ruptured disc at the C5-6 level, severely compressing the spinal cord. Emergency anterior cervical discectomy and fusion at C5-6 were performed. Because extensive cord swelling was observed on postoperative MRI, laminoplasty from C3 to C6 was performed 3 days after the initial operation. At a postoperative 8-month follow-up, the motor power was improved to grade III-IV- for both hands and grade IV- for both legs. Nontraumatic cervical disc rupture causing acute paraplegia is a very rare but possible event. Immediate neurologic assessment and thorough imaging studies to allow accurate diagnosis are crucial. Emergency surgical decompression is important and may lead to good neurological outcomes.