Ligaments are strong fibrous
bands that bind the skeleton together. The ligaments of the spine hold the
vertebral bones together, stabilize the spine, and protect the disks. The
two major ligaments are the anterior longitudinal ligament and the
posterior longitudinal ligament. These continuous bands run from the top
to the bottom of the spine along the vertebral bodies, providing a
structure to prevent excessive movement of the vertebral bones. This is
essential, considering that the major nerves of the body run through the
spine. The ligamental structure is powerful, but in a weakened or
continually stressed state, it cannot support the spine.