artificial femoral head arthroplasty

例句：

1. 1. The patient underwent artificial femoral headarthroplasty to alleviate hispain.
   患者接受了人工股骨头置换术以缓解他的疼痛。
2. 2. The surgery was performedto replace the damaged femoral head withan artificial one.
   手术是为了用人工头替换受损的股骨头。
3. 3. Thepatient's condition improvedsignificantly after the successful arthroplasty.
   手术后，患者的病情显著改善。