Leg cramps?!

Leg cramps?

had two (2) operations on my back (L4-L5) after the second operaion, started to get leg cramps in right leg, now some 4 years letter, getting them in left leg also, cramps last for anywhere from just a few seconds to several minutes long, and leaving me unable to walk the next day, would this kind of operation cause such problems.

3 weeks ago
have had blood test, potassium was where it belonged.

I think your "leg cramps" is nerve damage, possibly Meralgia paresthetica. I suspect the pain you feel will eventually lead to numbness in years to come. I would go to a neurologist and get an EMG to see if your back operation is the cause of this. I suspect it is.