Tourniquet use decreases estimated blood loss but has no effect on functional outcomes after TKR .
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Tourniquet Use Does Not Affect Functional Outcomes or Pain After Total Knee Arthroplasty: A Prospective, Double-Blinded, Randomized Controlled Trial
J Bone Joint Surg Am. 2019 Oct 16;101(20):1821-1828. doi: 10.2106/JBJS.19.00146.The use of tourniquets in total knee replacement (TKR) remains controversial. Purported benefits include less blood loss, better surgical field visualization, and quicker operative times. On the other hand, there are concerns with regards to vascular damage, and post-operative pain and muscle function. In this study, the authors randomized 200 patients undergoing primary TKR to undergo surgery with or without tourniquet. Outcomes included pain, functional outcomes, satisfaction, and range of motion. Patients who underwent surgery with a tourniquet had significantly less blood loss, but there was no difference in the majority of other functional, satisfaction, or pain outcomes.
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