Hi, I often have the same thing happen. For myself, cramps and spasms were at their worst before I had surgery for stenosis. After some time, almost every part of my body was in constant spasms or cramps. I also got alot of leg and foot cramps with my last bout of sciatica. My left foot was almost completely numb for many weeks..so the only good thing about it was I laid there watching my left foot and toes cramp up, yet I felt no pain. IT was the weirdest thing. I don't know why I get so many cramps, though. I have tried potassium, iron, calcium, magnesium, zinc, stretching, and muscle relaxant meds for mine, but nothing ever helped. However, there are people who have a deficiency in some of these, and that can cause cramping. So it is a possibility. I do know how it is and it is certainly no picnic.