“…The optimum duration for VTE prophylaxis remains controversial because the appropriate length of aspirin prophylaxis after TJA is not well studied. The studies included in this systematic review reported various durations of aspirin prophylaxis including 14 days [28,29,46,50], 21 days [52,58], 3 weeks [51], 1 month/4 weeks [11,34,35,37,40,44], 5 weeks [32], and 6 weeks [3,7,15,22,23,25,26,31,38,39,42,43,53,54]. We found no significant difference between incidence of PE or DVT and the different durations of aspirin treatment examined (<4 weeks, 4 weeks, and >4 weeks).…”