Evaluation of postoperative spinal epidural hematoma after microendoscopic posterior decompression for lumbar spinal stenosis: a clinical and magnetic resonance imaging study

Abstract

The incidence of postoperative SEHs may be greater than reported. Postoperative SEHs caused poor expansion of the dural sac despite its spontaneous regression. In addition, postoperative SEHs caused a delay in the patient's recovery and led to a poor clinical improvement. The prevention of postoperative SEHs might be required to prevent not only neurological deterioration but also a delay in the patient's recovery.