Abstract
An 11-year-old boy underwent thoracolumbar surgery to correct a deformity caused by congenital kyphoscoliosis from the 6th thoracic vertebra to the 2nd lumbar vertebra. During a screw insertion, some tore and cerebro-spinal fluid (CSF) leaked. After CSF leakage, the amplitude of the motor evoked potential in the left lower extremity was reduced by 90% compared to baseline value, but there was no nerve damage at the surgical site. His post-surgical mental status did not recover completely. Brain computed tomography revealed a subdural hemorrhage in the inter-hemispheric fissure, with both tentorium and right frontotemporooccipital and diffuse brain edema. On the 4th postoperative day, mental status recovered to near alertness, but upper motor strength was grade II, right lower motor strength was grade II and left lower motor strength was grade I. Right hemifacial palsy was also noted. At 2.5 months after surgery, right facial palsy remained, but motor function recovered to near normal levels with conservative care.
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