Intra-articular tranexamic acid mitigates blood loss and morphine use after total knee arthroplasty. a randomized controlled trial - Laoruengthana, A; Rattanaprichavej, P; Rasamimongkol, S; Galassi, M; Weerakul, S; Pongpirul, K (J Arthroplasty, 2019)