synovectomy of knee joint

例句：

1. 1.He underwent a synovectomy to treat his knee pain.
   他接受了关节切除术来治疗他的膝盖疼痛。
2. 2. The doctor performed an arthroscopic synovectomy on the patient's knee.
   医生为患者的膝盖进行了关节镜下的关节切除术。
3. 3.Synovectomy is often used to remove bone fragments from a joint that have become infected.
   关节切除术通常用于从感染的关节中去除骨碎片。