Analgesia efficacy of dexmedetomidine combined with ropivacaine for adductor canal block after total knee arthroplasty  
Tan Zhengling, Chen Junxing, Su Zhiyuan, Liu Xianbao, Lu Xiaoqin, Wang Le
Chinese Journal of Tissue Engineering Research . 2019, (24): 3798 -3804 .  DOI: 10.3969/j.issn.2095-4344.1289