The primary function of the spinal curves is shock absorption

Spinal curves:

  • Lumbar- lordosis (Anterior curve)
  • Thoracic- kyphosis (Posterior curve)
  • Cervical- lordosis (Anterior curve)

Sacral curve: Visually posterior as in the thoracic spine but is dependent on the position of the pelvis. Also the coccyx is not fixed and can move against the sacrum