Hello, I wouldn t jump to the conclusion that the pain represents anything SERIOUS based on the little information you ve provided but the fact you ve had several cervical fusions could mean you are prone to developing more than average osteoarthritic degenerative problems which would explain the back pain. However, going for an evaluation with a doctor is always the best first step in solving such problems. It will likely be necessary to get an imaging study of the back but it is also very likely (based on probability) that your pain in the back and legs can be adequately managed using conservative means at this time such as PHYSICAL THERAPY, AQUATHERAPY, and APPROPRIATE MEDICATIONS. Hope I have answered your query. Let me know if I can assist you further. Take care Regards, Dr Dariush Saghafi, Neurologist