About one year ago I injured my upper back while lifting a hevy object. Since then I've seen three M.D.s, three Chiropractors, and one Dr. of Osteopathy. I've attained the best results from the D.O. but It seems I've exacerbated the injury last weekend. The pain in my upper back is quite a bit more intense and I've experienced a serious loss of balance and controil of my extremities, particularlly in my legs. I fell down this morning. It was like when someone comes up behind you and hits you behind your knee and your leg collapses. My condition is most like my body is VERY drunk but my mind is clear. I'm a 62 year old male and other than this back thing I'm in good health and not over weight. I'm hoping for any information or advice on this condition.