Wang Q, Yue Y, Li D, Yang Z, Yeersheng R, Kang P. Efficacy of Single-Shot Adductor Canal Block Combined With Posterior Capsular Infiltration on Postoperative Pain and Functional Outcome After Total Knee Arthroplasty: A Prospective, Double- Blind, Randomized Controlled Study. The Journal of arthroplasty 34(8): 1650-1655, 2019 DOI: 10.1016/j.arth.2019.03.076.