Hi Meg and welcome.
I too had the cramps in my legs. I found that different doses of synthroid effected different large muscle groups. One change made my calves jump. Another made my upper legs and butt to jump and a third caused my large back muscles to twitch.
So I can understand the jumpy legs. Ince you are considering surgery I assume you are still on ATDS?? It seems remission is not in the future for you since you have had Graves’ for so many years. Let us know how you are doing. We are here 24/7 and only a click away.
Jake
On-line Facilitator