【摘要】 目的 研究胎儿时期跟骨生长发育特点。方法 30例(8～40周)正常胎儿跟骨用组织学切片(HE染色)方法对胎儿时期跟骨进行观察。结果 跟骨软骨内骨化发生在跟骨前、中1/3交界处深部。软骨雏形内有软骨管分布，软骨管使软骨雏形增大，并为骨化的发生和生长提供营养。跟骨骨化过程中，也有类似软骨膜环的结构。结论 跟骨发生骨化的部位和生长方式不同于管状骨的原发和继发骨化，软骨膜环限制和引导跟骨的生长，起到塑型作用。

    关键词 跟骨 生长 软骨管 软骨膜环

    A histological study of the calcaneal growth in fetus Chen Qi，Wang Min，Wang Jianguo，et al.

    Department of Pediatrics，Luo Hu Hospital，Shenzhen518001.

    【Abstract】 Objective To investigate the features of growth and development in the fetal calcaneum.Methods The features of the growing calcaneum of human were observed in30fetuses aged from8to40weeks of gestation，with interrupted serial sections histological methods.Results There is cartilage canals distribution in the calcaneal cartilaginous embryo.The cartilage canals enlarged the cartilaginous embryo.It supplied the nourishment to developˉment and growth of the ossifications.A cartilaginous ossification center arises between former and middle third neighˉboring the calcaneal depth.It resembled the mineralized ring during the calcaneal ossification as well.Conclusion The location of the ossifications and growing manners differed from the primary and secondary ossification of the long bones.The mineralized ring restricted and inducted the growth and development of the calcaneum ......