Spinal pain in the lumbar region (lower back) and cervical region (neck) are highly prevalent and are often the causes for many lost work days. Lumbar muscle strains and sprains are the most common causes of low back pain. The thoracic spine can also be a site of spinal pain, but because it is much more rigid, the thoracic spinal area is much less frequently injured than the lumbar and cervical spine. The lumbar and cervical spine are prone to strain because of its weight-bearing function and involvement in moving, twisting and bending. Lumbar muscle strain is caused when muscle fibers are abnormally stretched or torn. Lumbar sprain is caused when ligaments — the tough bands of tissue that hold bones together — are unusually stretched. Both of these can result from a sudden injury or from gradual overuse. When the lumbar spine is strained or sprained, the soft tissues become inflamed. This inflammation causes pain and may cause muscle spasms. Even though lumbar strain or sprain can be very debilitating, neither usually requires neurosurgical attention. Spinal pain can be caused by things more severe that might require surgical consideration. These usually involve spinal pain that radiates into arms, legs or around the rib cage from back toward the anterior chest.