Low back pain is a disease that affects patients for a long time, with pain that occurs irregularly and tends to produce pain during sleep at night. Low back pain not only affects the waist and legs, but also the shoulders and back, and if the elderly suffer from this disease, it is more serious and even affects normal activities. So what are the causes of low back and leg pain? Let’s take a look together. Common causes of lumbar pain: 1, lumbar disorders themselves 1, injury: vertebral fractures and dislocations, ligament strain, muscle strain, thickening of the ligamentum flavum, posterior synovial disorder syndrome, lumbar disc herniation, lumbar spinal stenosis, spondylolisthesis. 2.Degenerative and atrophic osteoarthralgia: formation of bone lips on the outer edges of vertebral bodies and joint edges of synapses, lumbar intervertebral disc degeneration and osteoporosis, etc. 3, congenital deformity: occult spina bifida, sacralization of the 5th lumbar vertebra, hooked spinous process and hemivertebral body, etc. 4, postural: scoliosis, increased lumbar pronation, hunchback, etc. 5, inflammation: tuberculosis of the spine is a specific inflammation, septic osteomyelitis of the spine is a non-specific inflammation, ankylosing spondylitis also belongs to this category. 6, tumors: metastatic cancer accounts for a large proportion, such as breast cancer and prostate cancer metastasis. Tumors that originate in the spine include hemangioma, giant cell tumor of bone and chordoma. Internal diseases 1.Digestive system diseases: peptic ulcer, pancreatic cancer, rectal cancer, etc. 2.Urological disorders: pyelonephritis, perinephric abscess, etc. 3.Gynecological disorders: uterine body inflammation, adnexitis, posterior tilt of the uterus, pelvic tumor, uterine prolapse, etc.