metacarpal tubercle

例句：

1. 1.The doctor removed the metacarpal tubercle to relieve his pain.
   医生切除了掌骨突起以缓解他的疼痛。
2. 2.The patient's metacarpal tubercle was enlarged due to an infection.
   患者的掌骨突起因感染而肿大。
3. 3.The surgeon performed a biopsy on the metacarpal tubercle to determine its cause.
   外科医生对掌骨突起进行了活组织检查，以确定其原因。