I suffer from spondylilothesis gd.3 ,over 51% slip on the l5. I have chronic pain from my lower back that extends through the buttock and down the calves to the ankle. If my body is jarred, pushed or my footing slips I have extreme jolting pain down the legs, mostly the right, with loss of balance. My question, is this a common symptom or reaction when the body is pushed or jarred suddenly? And if it is, is their any web-site or literature I can get to prove that this is for real? I am scheduled for a fusion of the l4,l5,s1 with pedicle screws to my pelvis and inter-body cage. People not in this position tend to think its an over reaction, but is deffinatly not.