Costal angle - Angulus costae



The external surface of the body of a rib is convex, smooth, and marked, a little in front of the tubercle, by a prominent line, directed downward and lateralward; this gives attachment to a tendon of the Iliocostalis, and is called the costal angle.

This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from

Anatomical hierarchy

General Anatomy > Bones; Skeletal system > Axial skeleton > Thoracic skeleton > Rib > Body of the rib; Shaft of the rib > Costal angle