Rib 9 (right) — false rib

Function

Completes the right costal margin's intermediate hoop, moving with the liver during deep breathing.

Landmarks

• Costal groove
• Angle

Articulations (joints)

• T8–T9 vertebrae
• Shared costal margin cartilage

Clinical relevance

The right ninth rib level approximates the liver's lower edge — tender here in hepatitis and congestive hepatomegaly.