Hernia of the cauda equina nerve caused by occult cerebrospinal fluid leakage post lumbar spinal stenosis operation: A case report

Prolonged negative pressure drainage in the presence of CSF leakage may lead to nerve root tethering. Drainage duration should be carefully balanced to prevent infection while avoiding nerve entrapment. Timely surgical intervention can effectively relieve nerve compression and improve outcomes. This case highlights the need for heightened vigilance regarding delayed neurological deterioration following spinal surgery, emphasizing the critical importance of early recognition and intervention.