Has anyone on tamoxifen had a knee replacement?

I have bone on bone knee arthritis that’s not getting better. I’m afraid to get a knee replacement because of the high incidence of blood clots in tamoxifen users. Research says to stop the meds 3 weeks before and 3 weeks after surgery but I think my age 70+ makes the surgery somewhat riskier. I’d rather be content with a cane and pain relievers than the alternative to a fatal blood clot.