Sa-Ngasoongsong, P., Channoom, T., Kawinwonggowit, V., Woratanarat, P., Chanplakorn, P., Wibulpolprasert, B., Wongsak, S., Udomsubpayakul, U., Wechmongkolgorn, S., Lekpittaya, N. Postoperative blood loss reduction in computer-assisted surgery total knee replacement by low dose intra-articular tranexamic acid injection together with 2-hour clamp drain: a prospective triple-blinded randomized controlled trial. Orthopedic Reviews 2011; 2: e12