1.If no clinical effect is achieved after expectant treatment and extra-spinal diseases were excluded, exploratory operation inside canalis spinal should be employed.

1.经保守无效及排除其它椎管外疾患，行椎管内探查手术。

2.Clinical data of 14 patients suffered from backleg pain caused by entrapment of thickened capillary and cordal fiber bundle inside canalis spinalis were analyzed, retrospectively.

2.对14例椎管内增粗毛细血管及条索状纤维素带卡压致的患者临床资料进行回顾性分析。