Hi. I had an anterior total knee replacement on June 10. Surgery went fine and I was discharged three days later. Am already walking wit just a cane, but I developed a low grade fever (99.0-100.0) that I Can t shake off. My gp put me on cipro two days ago, 500 mg, once per day, but tonight I still have the low grade fever. He thinks it s a uti. Question: how long on average before the cipro might break the fever and I feel better? Thanks, -- Rob.