Objective:To study the development of the lenticular process of incus,and to make clear whether the lenticular processes are separated in ossicular chain.

• 目的:研究人体听骨中砧骨长脚及豆状两骨之间的关系,砧骨长脚末端的豆状突在听骨链解剖中是否为一块独立的骨。