Influence of Preoperative Frailty before Operation on Knee Function Rehabilitation in Elderly Patients after Unilateral Total Knee Arthroplasty 
FANG Wen,WANG Xiuhong,WANG Junhua,JIANG Zhiyue,DONG Lianghong,LI Jing
Chinese General Practice . 2021, (8): 968 -976 .  DOI: 10.12114/j.issn.1007-9572.2020.00.617