BoneIrregular bone

Ninth costal cartilage

Latin: Cartilago costalis IX sinistra

Location: Thorax — lower

Paired structure: one on the left and one on the right side of the body.

View the ninth costal cartilage in 3D

Function

Left lower cartilage finishing the margin's curve above the kidney and colon.

Landmarks

  • Tip joins the margin

Articulations (joints)

  • Ninth rib
  • Shared chondral bar

Clinical relevance

The intercostal nerves of this level supply the abdominal wall — nerve entrapment here mimics visceral pain.

Educational anatomy reference, not medical advice. About this content.