Hello! My name is Jessica, I am a physician assistant, and one of the providers at Aesthetic Skin in Winnetka and Chicago. This is a great question. In general, getting facial fillers a month prior to a total knee replacement is typically considered safe, as long as you're in good overall health and have no contraindications that might affect your surgery or healing. Since facial fillers are non-invasive and localized, they generally won’t interfere with the knee replacement procedure itself. However, it’s important to keep in mind that any surgical procedure, including a knee replacement, involves a recovery period, and you’ll want to ensure your body is in the best condition possible before undergoing major surgery. I hope this helps and best of luck!