No Increased Risk of Aseptic Loosening with Tourniquetless Cemented Total Knee Arthroplasty.

Our study examined whether risk of revision for aseptic loosening following cemented total knee arthroplasty (TKA) is (1) increased with tourniquetless surgery and (2) affected by patient characteristics or surgical factors. Primary cemented TKAs from 2005-2012 with 2-year follow up were analyzed (n = 5,508 with tourniquet; n=101 without). Revision for aseptic loosening was compared between TKA performed with and without a tourniquet. Patient characteristics were recorded. At mean 4.8-year follow up, risk of aseptic loosening was similar between TKA performed with or without a tourniquet (p = 0.3151). Aseptic loosening was more likely in men (p = 0.0018) and patients younger than 50 (p < 0.0001). No difference was observed between cruciate-retaining and posterior-stabilized implants (p = 0.1250). With the numbers available for study, we did not observe an increased risk of aseptic loosening with tourniquetless cemented primary TKA. Patients younger than 50, particularly men, should be counselled on the increased risk of TKA revision for aseptic loosening. (Journal of Surgical Orthopaedic Advances 32(2):111-113, 2023).