At the caudal end of the sacrum the roof of the vertebral canal is commonly deficient . 在骶管末端,椎管往往缺損。
Treatment of compression syndrome of cervical posterior branch by cervical nerve block outside vertebral canal and manipulation 椎管外頸神經(jīng)阻滯加手法治療頸神經(jīng)后支卡壓綜合癥
Treatment of thoracolumbar fracture with paralysis with laminectomy , replantation and circular decompression of the vertebral canal 椎板截骨原位再植椎管環(huán)狀減壓治療胸腰椎骨折伴截癱