prosternal episternum

例句：

1. 1.The surgeon performed a prosthetic heart surgery on the patient.
   外科医生为患者进行了一次心脏移植手术。
2. 2. He was examined for signs of infection in the prosternal episternum.
   他接受了胸骨前缘感染迹象的检查。
3. 3. During the operation, the surgeon had to make a small incision in the prosternal episternum.
   在手术过程中，外科医生不得不在胸骨前缘做一个小切口。