arthroplasty

例句：

1. 1. After the surgery, he was in a cast for six weeks.
   手术后，他戴着石膏六周。
2. 2. The doctor advised him to avoid heavy lifting until his joints healed.
   医生建议他避免举重，直到关节愈合。
3. 3. She had an arthroplasty done on her knee to relieve pain and improve mobility.
   她做了膝关节关节置换手术来缓解疼痛并改善活动能力。