A normal spine is strong and mobile. While spines vary in size and shape from person to person, a healthy spine has natural front-to-back curves that make it possible to walk, balance, sit, stand, and twist, all of which are complex, interactive movements.
Children’s spines naturally curve in stages:
- During fetal development, the primary curves in the thoracic spine develop, as well as the sacral curve at the bottom of the spine.
- As babies, children have a C-shaped spine. Secondary curves in the cervical and lumbar spine develop as infants become able to lift their heads, sit up, crawl, stand, and walk.
- As children grow, their spine continues to develop natural curves into a normal, mature spine.