Pubic arch: Definition from Answers.com

Bone: Pubic arch

Female pelvis. (Pubic arch labeled at bottom center.)

Male pelvis. (Pubic arch labeled at bottom center.)
Latin	a. pubicus
Gray's	subject #58 240

The eminences of the lower circumference of the true pelvis are separated by three notches: one in front, the pubic arch, formed by the convergence of the inferior rami of the ischium and pubis on either side. The angle at which they converge is known as the subpubic angle.

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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 As such, some of the information contained herein may be outdated.

Bones of pelvis / pelvic cavity

General

sacrum · coccyx · hip bone

Ilium

body	arcuate line

wing	gluteal lines (posterior, anterior, inferior) iliac spines (anterior superior, anterior inferior, posterior superior, posterior inferior) other: crest · tuberosity · fossa

Ischium

body	ischial spine · lesser sciatic notch

superior ramus	tuberosity of the ischium

inferior ramus	no substructures

Pubis

body	pubic crest

superior ramus	pubic tubercle · obturator crest

inferior ramus	pectineal line

Compound

acetabulum (acetabular notch) · iliopubic eminence / iliopectineal line · linea terminalis · ischiopubic ramus / pubic arch

obturator foramen · greater sciatic foramen / greater sciatic notch · lesser sciatic foramen

lesser pelvis (pelvic inlet, pelvic brim, pelvic outlet) · greater pelvis

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	Perineal (in medicine)
	Subpubic angle
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