听骨发育的研究及其临床意义

THE DEVELOPMENT AND CLINIC APPLY OF THE OSSICLES IN MAN

本文对325侧胚胎第11周至成人颞骨标本按矢状位、垂直位和水平位作连续组织切片。观测结果:砧骨在胚胎第11周,锤骨在胚胎第15周、镫骨在胚胎第16周分别出现软骨化骨中心。各听骨仅有一个骨化中心,各有自身的生长规律,约在胚胎第28周,软骨化骨完成,无骺板存在,听骨大小形态与成人相近。提出胎儿听骨代替成人听骨作同种异体听骨移植重建的理论依据。

According to the frontal,sagittal,horizontal position,325 temporal specimens(the range of whose age group was from 11th week foetus to adult)were sectioned by series.The measurement and observation resulted that the incus at 14th week,the malleus at 15th week,the stapes at 16th week began to ossify respectivelY.About 28th week,the ossicles had ossified.The process of the ossicle ossification was similar to the process of the long bones of ossification in the human being,but they had only one ossified center.After their ossification in the fetal period,they did not ossicles for the ossiculotympanic transplantation.