The abnormalities included 26 tethered cords, 8 diastematomyelia, 9 diplomyelia, 7 syringomyelia, and 8 low lying conus. MRI examinations were all positive.

• 结果 36 例脊髓异常中脊髓栓系26 例, 二分脊髓8 例, 脊髓纵裂9 例, 脊髓空洞7 例, 低位圆锥8 例。