Ischiopubic ramus

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Ischiopubic ramus
Pelvic girdle
Right hip bone. External surface.
Latin ramus ischiopubicus
Dorlands/Elsevier r_02/12690421

The ischiopubic ramus is a compound structure consisting of the following two structures:

It serves as part of the origin for the Obturator internus muscle.

It also marks a vertex of the anal triangle and the urogenital triangle.

The fascia of Colles is attached to its margin.

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This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

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Pelvis/pelvic cavity: sacrum, coccyx, hip bone
Ilium: Arcuate line - Wing - gluteal lines (Posterior, Anterior, Inferior) - Fossa - Tuberosity - Crest - iliac spines (Anterior superior - Anterior inferior - Posterior superior - Posterior inferior)

Ischium: Body (Ischial spine, Lesser sciatic notch) - Superior ramus (Tuberosity of the ischium) - Inferior ramus

Pubis: Superior ramus (Pubic tubercle, Pubic crest, Obturator crest) - Inferior ramus (Pectineal line)

Compound: Obturator foramen - Acetabulum - Acetabular notch - Greater sciatic notch - Iliopectineal eminence - Ischiopubic ramus - Pubic arch - Lesser pelvis (Pelvic inlet, Pelvic brim, Pelvic outlet) - Greater pelvis