i fell and broke my left knee cap and a week after the mobilizer came off my left leg started to get numb. it progressed to numb hands numb feet , shock sensations down both arms and legs until finally i got an epideral but i cannot walk without staggering and my left leg is losing mucle and is thinner than the right. my mri said i have annular bulging at l3-l4 and l4-l5. what does this mean?