Your surgery was 4 months ago. We probably won't have to deal with ice for another month yet. Anyway, by now you are healed up. I had a complete Hysterectomy about 8 years ago--cancer--It took a few months to heal, but then the surgery site was fine. I had to wait for about 2 months after the surgery before they could do the internal radiation therapy that they used to make sure that there wasn't any more cancer. Guess it worked, as I am still here. Fortunately, I only needed three radiation visits. And no, I don't glow in the dark now! So chill, figuratively speaking. You could still break a leg or something else in an ice related fall, but that is always a possibility. You could also trip and fall on dry level ground. Most of the time that doesn't happen, so don't dwell on it. Find something else to occupy your time and mind.