ossa metacarpi

例句：

1. 1. The doctor performed surgery on the patient's ossa metacarpi to treat his fractured bone.
   医生为患者进行了手术，以治疗其骨折的掌骨。
2. 2. The surgeon removed the ossa metacarpi and replaced it with a prosthetic one.
   外科医生移除了掌骨并用假体替换了它。
3. 3.During the race, the athlete had to use his ossa metacarpi to grip the handlebars.
   在比赛中，运动员必须使用他的掌骨来握住把手。