Injured my right hamstring 5 years ago. I was showing off...lol.. It was black and blue from my ass to my calf. It healed up but ever since, that hamstring will cramp up on me like you cant believe. Its like it just snaps into a ball in a split second and it can be so bad I cant move at all.

Any moves with my right leg back, where I am driving off my back foot. Lordy. I try to ignore it , but when it cramps, it zooms right to a 10 and locks my hip into extension. Then Im hopping around on my left leg until the cramp goes away. It sucks. Oh well. I have accepted that it might never be 100%.
Everyone of us has some kind of injury. I guess this one isnt as bad as some.

What kinds of cramps do you get?