Can Fragmented Disc In Lower Back Cause Spasms In Limbs?

Hi, can damage caused by a fragmented disc in my lower back, causing problems in my legs, also be the cause of similar problems in my upper body and more specificaly, my arms?

I am female, 51, weigh 9st 10lbs. Had disc problem about 2 years ago. scan showed fragments pressing on sciatic nerve. since then have had muscle spasms in my legs and hips, though they don't make my legs jerk but can make my toes curl upwards and cause cramp in several muscles at once. My feet are constantly 'fizzy' spasms have got progressively more active. I also have the same type of spasms in my shoulders and arms and my hands sometimes spasm close . My arms and legs feel like jelly.