 [ Symptoms ] if you put steroid cream on your legs for psoriasis can it lead to weight gain [ Disease ] you should have a pre op appointment with your surgeon is nurse or physician assistant andor a nurse at the facility where your knee replacement will occur these nurses should answer all your questions about pre operative medication regimens whether or not to take lantus the day of your surgery when to stop eating before surgery and so on in general people with blood sugar problems can experience longer healing times i would recommend asking your surgeon or hisher nurse or physician assistant what to expect in terms of possible problems healing because your a1c is good you may not experience any problems at all be sure to follow all your surgeon is printed instructions for post op care of the wound i suggest you write down all your questions for the pre op appointment be sure you receive printed instructions for before and after the surgery if any of your questions are not answered in advance feel free to call your surgeon is office for clarification hope this helps