屈戌关节

例句：

1. 1. He had to bend his knees to get through the narrow passage.
   他不得不弯曲膝盖才能穿过狭窄的通道。
2. 2. The doctor advised him to exercise regularly to maintain his knee joint health.
   医生建议他定期锻炼以保持膝盖关节的健康。
3. 3. She limped as she walked, showing the pain in her knee joints.
   她走路时一瘸一拐，显示出她的膝盖关节疼痛。