flexor digitorum longus

例句：

1. 1. The doctor performed surgery on the patient's flexor digitorum longus.
   医生对患者的伸肌腱进行了手术。
2. 2. The injured player had to have his flexor digitorum longus repaired.
   受伤的球员不得不修复他的伸肌腱。
3. 3. The researcher discovered that the flexor digitorum longus plays a crucial role in the healing process.
   研究者发现伸肌腱在愈合过程中起着关键作用。