BoneIrregular bone
Ninth costal cartilage
Cartilago costalis IX sinistra
- Location:
- Thorax — lower
- Paired structure: one on the left and one on the right side of the body.
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.