1 临床诊断clinic diagnosis
2,腰椎间盘突出lumbar disc herniation(LDH)
3,患者sufferer
4,病变椎间隙pediatric spinal
5,侧卧过伸位the spend protrude
6 过屈位the spend bend
7,硬膜囊fibrosa sac
8,腰椎后纵韧带lumbar posterior longitudinal ligament
9,椎间盘纤维环spinal discs textile fiber ring
10,完整性integrality
11,弹性指数 elasticity index
Clinic diagnosis of 131 lumbar disc herniation (LDH) sufferers cases by lumbar spinal dynemic myelography (DM),then measured the pressure depth of fibrosa sac of the pediatric spinal of the spend protrude and the spend bend respectively,judged the elasticity of the lumbar posterior longitudinal ligament and the integrality of the spinal discs textile fiber ring by subtracting the values of the spend protrude to the spend bend.What we called elasticity index was defined as follows:the value of elasticity index was more than or equal to 0.5 cm was considered as good elasticity,and that was between 0.5 cm and 0.3 cm was considered as comparatively good elasticity,less than 0.3 cm was considered as bad elasticity.