To observe the correlativity between secondaryossificationcenter and cartilage canals in cartilage epiphysis and the initial morphosis of the secondaryossificationcenter.
为观察软骨骺内次级骨化中心与软骨管的关系，及次级骨化中心初始形态结构。
2
It was concluded that the cartilage canals of fetus play great roles in formation of secondaryossificationcenter and exist in primary secondaryossificationcenter.
说明胎儿股骨远端次级骨化中心初始时其内存在软骨管，软骨管对次级骨化中心的形成起作用。
3
Results:The metaphysis and the periphery of the secondarycenter of ossification were red marrow. They showed marked enhancement on T 1WI. Enhancement ratio declined in both regions with age.