Tramadol hydrochloride/acetaminophen combination versus non-steroidal anti-inflammatory drug for the treatment of perioperative pain after total knee arthroplasty: A prospective, randomized, open-label clinical trial

Takeshi Mochizuki, Koichiro Yano, Katsunori Ikari, Ryo Hiroshima, Hiromitsu Takaoka, Kosei Kawakami, Naoko Koenuma, Mina Ishibashi