Results:The spinal branch artery alone or t ogether with the anterior vertebral canal branch started from lumbar artery, and most of spinal branch artries entered dural sheath in the dista.

The clinical evaluation of diagnosis and treatment of spinal dural arteriolvenous fistula;

Diagnosis and treatment of dural arteriovenous fistula at the craniocervical junction

Spinal dural arteriovenous fistulas(report of 1 case);

Diagnosis and surgical treatment of spinal dural arteriovenous fistulas;

The diagnosis and treatment of patients with spontanous spinal epidural hematoma;