plantar flexion

例句：

1. 1. The patient was in a lot of pain due to the plantar flexion.
   由于跖屈，患者感到非常疼痛。
2. 2. During the race, he experienced a sudden plantar flexion that made him lose balance.
   比赛中他突然感到跖屈，导致他失去平衡。
3. 3. The doctor advised the patient to avoid any activities that could cause plantar flexion.
   医生建议病人避免任何可能导致跖屈的活动。