Patients with low back problems and leg problems are most often caused by nerve or spinal cord compression in the low back. The nerves that enter the legs emanate from the nerve roots in the lumbar region, which then form the femoral and sciatic nerves that innervate the muscles, fascia, and ligaments of the legs and thus govern the normal weight-bearing function of the lower extremities. If a patient has lumbar and leg problems, it means that there are lumbar pathologies, such as lumbar disc herniation, lumbar spinal stenosis, lumbar spinal slippage and swelling in the lumbar spinal canal or bone tumor in the lumbar spine, which will cause nerve and spinal cord compression and thus cause symptoms of lumbar and leg problems.