navicular abdomen

例句：

1. 1. He was injured in the knee during the game.
   他在比赛中膝盖受伤了。
2. 2. The doctor performed surgery on his navicular bone.
   医生对他的膝盖骨进行了手术。
3. 3. The patient had to wear a brace on his navicular for several weeks.
   患者不得不在膝盖上戴护具几周。