Hi there. You have L3 L4 and L4 L5 level disc spondylosis which is caused by chronic wearing away of the cervical spine, including the discs and joints between the bones of lumbar spine. These changes can press down one or more of the nerve roots and the spinal cord in advanced cases. This could be causing the back pain and difficulty in walking. Certain triggers for spondylosis are past spine injury and severe arthritis. You need to show to a neurologist; therapy options available are NSAIDs, acupressure, epidural injection of steroids, physical therapy and exercise under supervision, lastly decompressive surgery. Hope these help. Take care.
you could talk to the docs about the nerve contact and see about some injections to calm down the nerves from firing back all that pain. I'm so sorry you are suffering so terribly, I too have been living with unbearable back pain...I hope you find answers and a treatment that can help you!