The low-back pain is the term used when referring to a pain in the lower region (lumbar) of human back. The acute low-back can be caused by a car accident or a fall. It happens suddenly and the patient is usually able to identify what happened. In cases where there are damaged structures are generally soft tissues like muscles, ligaments or tendons. In the case of serious accidents can occur fractures of the articulating vertebrae. As for the chronic low back pain that occurs over a long period of time and is usually causes: Osteoarthritis, rheumatoid arthritis, tumors, disk degeneration or herniated disc