人腕关节软骨板胚胎学的初步研究

Research on Development of the Wrist Joint Articular Disc

采用解剖学和组织学的研究方法 ,对胎儿期腕关节软骨板的形态、结构进行观察 ,获得有关胎儿时期腕关节软骨板发生时间、形态学、组织学结构特征的材料 :( 1)胎儿 4个月时 ,在尺骨下端的位置已经出现了软骨细胞 ,但是 ,肉眼可见的软骨板成型于 6月底至 7月初。 ( 2 )胎儿软骨板的形状为半月形、三角形。 ( 3 )胎儿腕关节软骨板为透明软骨 ,其周围有结缔组织膜 ,该膜随胎龄增加而增厚。 ( 4 )胎儿腕关节软骨板中的血管随胎龄增加而减少。

The shape and the structure of the articular disc of the fetus wrist joint are observed and researched and some information about the time when it happened and morphological characteristics is obtained. 1 Some soft-bone cells have appeared under the caput ulnae when the fetus is about four months old.But only when the fetus is about six o seven months old,can articular disc be seen by naked eyes. 2 The shapes of the articular disc of the wrist joint are like a triangle or moon. 3 The articlar disc of the wrist joint is a hyaline cartila and is rounded by the memberance of the collective tissue,which will become thicker with the age of the fetus. 4 The number of the blood vessels in the articular disc will decrease with the age of the fetus.