Inferior pubic ramus
The inferior pubic ramus is a part of the pelvis and is thin and flat. It passes laterally and downward from the medial end of the superior ramus; it becomes narrower as it descends and joins with the inferior ramus of the ischium below the obturator foramen.
|Inferior pubic ramus
Right hip bone. External surface. (Inferior ramus of pubis labeled at bottom right.)
Pelvis. Inferior pubic ramus is 4c.
|Ramus inferior ossis pubis
|Anatomical terms of bone
Its anterior surface is rough, for the origin of muscles—the Gracilis along its medial border, a portion of the Obturator externus where it enters into the formation of the obturator foramen, and between these two, the Adductores brevis and magnus, the former being the more medial.
In the female pelvis, the medial border is thick, rough, and everted, and presents two ridges, separated by an intervening space. The ridges extend downwards, and are continuous with similar ridges on the inferior ramus of the ischium;
- to the external ridge is attached the fascia of Colles
- to the internal ridge is attached the inferior fascia of the urogenital diaphragm
- Cross section image: pelvis/pelvis-e12-15—Plastination Laboratory at the Medical University of Vienna
- pelvis at The Anatomy Lesson by Wesley Norman (Georgetown University) (pelvislateral)