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There are three bones of the os coxae (hip bone) that come together to form the acetabulum. Contributing a little more than two-fifths of the structure is the ischium, which provides lower and side boundaries to the acetabulum. The ilium forms the upper boundary, providing a little less than two-fifths of the structure of the acetabulum.
The same human pelvis, front imaged by X-ray (top), magnetic resonance imaging (middle), and 3-dimensional computed tomography (bottom). The pelvis (pl.: pelves or pelvises) is the lower part of an anatomical trunk, [1] between the abdomen and the thighs (sometimes also called pelvic region), together with its embedded skeleton [2] (sometimes also called bony pelvis or pelvic skeleton).
The hip bone (os coxae, innominate bone, pelvic bone [1] [2] or coxal bone) is a large flat bone, constricted in the center and expanded above and below. In some vertebrates (including humans before puberty ) it is composed of three parts: the ilium , ischium , and the pubis .
A labeled diagram of the human pelvis, created from a photograph I took of a model in a university anatomy lab. Traced and rendered using Inkscape 0.44.1: Date: 15 December 2006 (original upload date) Source: Transferred from to Commons. Author: Je at uwo at English Wikipedia: Other versions: Derivative works of this file: Pelvis diagram es.png
In a propubic pelvis, however, the pubic bone extends forward towards the head of the animal, as can be seen in the typical saurischian pelvic structure pictured below. The acetabulum , which can be thought of as a "hip-socket", is an opening on each side of the pelvic girdle formed where the ischium , ilium , and pubis all meet, and into which ...
The anterior superior iliac spine (ASIS) is a bony projection of the iliac bone, and an important landmark of surface anatomy. It refers to the anterior extremity of the iliac crest of the pelvis. It provides attachment for the inguinal ligament, and the sartorius muscle. [1]
Pelvic Girdle ≅ pelvic girdle (Q2943862) Pelvic Girdle Ilium ≅ hip bone (Q3356933) Ilium Iliac crest ≅ iliac crest (Q3774464) Iliac crest Iliac spine ≅ iliac spine (Q16878765) Iliac spine Acetabulum ≅ acetabulum (Q1130461) Acetabulum Ischium ≅ ischium (Q531029) Ischium Pubis ≅ pubic bone (Q220815) Pubis
The other two hip bones, the ischium and the pubis, extend ventrally down from the ilium towards the belly of the animal. The acetabulum, which can be thought of as a "hip-socket", is an opening on each side of the pelvic girdle formed where the ischium, ilium, and pubis all meet, and into which the head of the femur inserts. The orientation ...