From the side, a healthy spine makes a gentle S — four curves that balance your weight and absorb shock. When a curve becomes exaggerated or sideways, it has a name. Compare them.
Normal curves
side view
Spinal curvaturesnormal vs abnormal
Pick a spine
📷 Reference image
A real labeled figure to compare with the interactive above.
Spinal Curvatures — OpenStax, CC BY 3.0 (via Wikimedia Commons)
