What causes low back pain with leg pain?

Lumbar pain and accompanying leg pain, most cases or due to lumbar disc herniation caused by disc herniation after the pressure changes in the spinal canal, through the nerve will reflect to the waist and therefore will cause lumbar pain. After disc herniation, inflammatory cytokines, such as prostaglandin factor and tumor necrosis factor, will also cause pain in the waist. These factors will also stimulate the surrounding nerve roots, causing radiation pain in the nerve root control area, so it shows leg pain. The herniated disc may also directly compress the nerve roots, which will also cause leg pain. In addition, low back pain and leg pain may also be caused by some tumor diseases of the lumbar spine. These tumor diseases will also cause changes in the pressure in the spinal canal and compression of the nerve root, so they will show low back pain. It is necessary to actively improve the lumbar magnetic resonance examination for clarification.