Ren gong xi guan jie zhi huan shu qian bi du/ Ren gong xi guan jie zhi huan shu qian bi du / Bu fen xi guan jie zhi huan shu/ Bu fen xi guan jie zhi huan shu = Gong su huan jie de su song jian du/ Qing shao nian xing ti duan lian bi du/ Zhi gong bai ke zhi shi ri du/ Bu fen xi guan jie zhi huan shu =: Partial knee arthroplasty/ Bu fen xi guan jie zhi huan shu/: Partial knee arthroplasty, Bu fen xi guan jie zhi huan shu =: Partial knee arthroplasty /