The spine is divided into 5 regions: cervical, thoracic, lumbar, sacral and coccygeal. Regarding the mobility, cervical column (C1-C7) is the most mobile, column thoracic (T1-T12) is less mobile and the lumbar (L1-L5) shows a large movement of flexion-extension. During the lifetime, the spine is subject to various internal and external actions. continue reading…
