dislocation of knee joint

例句：

1. 1.He was diagnosed with a knee dislocationand underwent surgery.
   他被诊断出膝盖脱位并接受了手术。
2. 2. The patient had towear a knee brace for several weeksuntil the dislocation healed.
   患者不得不戴上膝盖护具几周，直到脱位愈合。
3. 3. Knee dislocation is a seriousinjury that requires immediate medical attention.
   膝盖脱位是一种严重的伤害，需要立即就医。