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Blood Loss in Primary Unilateral Total Knee Arthroplasty with Limited Tourniquet Application: A Randomized Controlled Trial.
JB & JS Open Access 2023
BACKGROUND: Tourniquet application in total knee arthroplasty (TKA) has many benefits and may have a role in the incidence of perioperative complications. Our aims were to examine the safety of applying a tourniquet for a limited amount of time during primary unilateral TKA (specifically, during cementation and final component fixation only) and to compare perioperative complications between the limited-application group and the full-application group.
METHODS: We conducted a randomized controlled study of 62 patients undergoing primary unilateral TKA. Patients were randomly allocated to either the limited or full tourniquet application. The follow-up period was 6 months. We evaluated intraoperative, postoperative, total, and hidden blood loss as the primary outcome measures and clearance of the surgical field, operative duration, and perioperative complications as the secondary outcome measures.
RESULTS: We found a significant difference in surgical field clearance between the groups. There was no significant difference in total, hidden, or postoperative blood loss between the groups. Mean intraoperative blood loss was significantly lower in the full-application group than in the limited-application group (171.742 ± 19.710 versus 226.258 ± 50.290 mL; p = 0.001). Perioperative complications, including allogeneic blood transfusion rates, did not significantly differ between the groups.
CONCLUSIONS: Limited tourniquet application is safe to use in primary unilateral TKA and does not increase the incidence of perioperative complications or total blood loss when compared with a standard, full-time tourniquet application.
LEVEL OF EVIDENCE: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
METHODS: We conducted a randomized controlled study of 62 patients undergoing primary unilateral TKA. Patients were randomly allocated to either the limited or full tourniquet application. The follow-up period was 6 months. We evaluated intraoperative, postoperative, total, and hidden blood loss as the primary outcome measures and clearance of the surgical field, operative duration, and perioperative complications as the secondary outcome measures.
RESULTS: We found a significant difference in surgical field clearance between the groups. There was no significant difference in total, hidden, or postoperative blood loss between the groups. Mean intraoperative blood loss was significantly lower in the full-application group than in the limited-application group (171.742 ± 19.710 versus 226.258 ± 50.290 mL; p = 0.001). Perioperative complications, including allogeneic blood transfusion rates, did not significantly differ between the groups.
CONCLUSIONS: Limited tourniquet application is safe to use in primary unilateral TKA and does not increase the incidence of perioperative complications or total blood loss when compared with a standard, full-time tourniquet application.
LEVEL OF EVIDENCE: Therapeutic Level I. See Instructions for Authors for a complete description of levels of evidence.
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