Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 29 On the Bones Which Are Attached to the Sides of the Sacrum

The part of the ilium extending behind the transverse processes of the sacrum

This thick part of the ilium stands out and extends to the rear (H, I in figs. 2, 3) [crista iliaca] much more than the breadth of the transverse processes of the sacrum, in the first place because the ilium needed to be extremely broad and spreading like the scapula to allow for the origin of muscles that move the femur as well as many others to be explained later; further, to establish a fit place near the posterior of the sacrum from which the fourth muscle of those that move the thorax in man (D in the 12th table of muscles) [m. iliocostalis thoracis] might originate; together with the eleventh of those that move the back (G in the 13th table of muscles) [m. longissimus thoracis], which takes its origin together with the muscle of the thorax from the inner side of the ilium (whence we have said it is carried backward) and from the posterior surface of the sacrum, in the same way as the thirteenth of the muscles moving the back (T, V in the 14th table of muscles) [m. multifidus] originating from this point in the ilium and the sacrum.



Book One -- The things that sustain and support the entire body, and what braces and attaches them all. [the bones and the ligaments that interconnect them] | Chapter 29 On the Bones Which Are Attached to the Sides of the Sacrum