Back pain with leg symptoms often implies that that your back pain is also associated with pain, abnormal feeling, numbness, or weakness of your legs or feet. This could indicate that there is pinching or pressure on a nerve in your lumbar spine. Back pain can come from several different structures in the lower back, including the lumbar spine bones or joints, discs, muscles, or nerves. The pain could be due to causes including but not limited to lumbar radiculitis, lumbar radiculopathy and lumbar spinal stenosis.