Posterior gluteal line

Information about Posterior gluteal line

Bone: Posterior gluteal line
Right hip bone. External surface. (Posterior gluteal line is red arch near top, labeled at center left.)
Latinlinea glutea posterior
subject #57 232
Dorlands/Elsevier l_10/12496152
The posterior gluteal line (superior curved line), the shortest of the three gluteal lines, begins at the crest, about 5 cm. in front of its posterior extremity; it is at first distinctly marked, but as it passes downward to the upper part of the greater sciatic notch, where it ends, it becomes less distinct, and is often altogether lost.

Behind this line is a narrow semilunar surface, the upper part of which is rough and gives origin to a portion of the Gluteus maximus; the lower part is smooth and has no muscular fibers attached to it.

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 As such, some of the information contained herein may be outdated.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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Bones of pelvis/pelvic cavity
Generalsacrum, coccyx, hip bone
IliumArcuate line - Wing - gluteal lines (Posterior, Anterior, Inferior) - Fossa - Tuberosity - Crest - iliac spines (Anterior superior - Anterior inferior - Posterior superior - Posterior inferior)
IschiumBody (Ischial spine, Lesser sciatic notch) - Superior ramus (Tuberosity of the ischium) - Inferior ramus
PubisSuperior ramus (Pubic tubercle, Pubic crest, Obturator crest) - Inferior ramus (Pectineal line)
CompoundObturator foramen - Acetabulum - Acetabular notch - Greater sciatic notch - Iliopectineal eminence - Ischiopubic ramus - Pubic arch - Lesser pelvis (Pelvic inlet, Pelvic brim, Pelvic outlet) - Greater pelvis
Latin}}} 
Official status
Official language of: Vatican City
Used for official purposes, but not spoken in everyday speech
Regulated by: Opus Fundatum Latinitas
Roman Catholic Church
Language codes
ISO 639-1: la
ISO 639-2: lat
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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Above the ischial spine is a large notch, the greater sciatic notch, converted into a foramen by the sacrospinous ligament

It transmits the Piriformis, the superior and inferior gluteal vessels and nerves, the sciatic and posterior femoral cutaneous nerves, the internal
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The gluteus maximus is the largest and most superficial of the three gluteal muscles. It makes up a large portion of the shape and appearance of the buttocks.

It is a broad and thick fleshy mass of a quadrilateral shape, and forms the prominence of the nates.
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Public domain comprises the body of knowledge and innovation (especially creative works such as writing, art, music, and inventions) in relation to which no person or other legal entity can establish or maintain proprietary interests within a particular legal jurisdiction.
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Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened) is an English-language human anatomy textbook widely regarded as a classic work on the subject.
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Bones are rigid organs that form part of the endoskeleton of vertebrates. They function to move, support, and protect the various organs of the body, produce red and white blood cells and store minerals.
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pelvis (pl. pelvises or pelves) is the bony structure located at the base of the spine (properly known as the caudal end). The pelvis incorporates the socket portion of the hip joint for each leg (in bipeds) or hind leg (in quadrupeds).
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The pelvic cavity is a body cavity that is bounded by the bones of the pelvis and which primarily contains reproductive organs, the urinary bladder, and the rectum.

Borders

The boundaries are as follows:
  • anterior: pubic symphysis

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The sacrum is a large, triangular bone at the base of the spine and at the upper and back part of the pelvic cavity, where it is inserted like a wedge between the two hip bones.
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The coccyx (pronounced kok-siks) (Latin: os coccygis), commonly referred to as the tailbone, is the final segment of the human vertebral column, of four fused vertebrae (the coccygeal vertebrae) below the sacrum.
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The hip bone (or innominate bone) is a large, flattened, irregularly shaped bone, constricted in the center and expanded above and below. It is one of the few ball and socket synovial joints in the body.
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For other uses, see Ilion (disambiguation).


The ilium of the pelvis is divisible into two parts, the body and the ala; the separation is indicated on the internal surface by a curved line, the arcuate line, and on the external surface by the margin
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For other arcuate lines, see arcuate line.
The arcuate line of the ilium is a smooth rounded border on the internal surface of the ilium. It is immediately inferior to the iliac fossa and Iliacus muscle.

It runs inferior, anterior, and medial.
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The wing of ilium (or ala) is the large expanded portion which bounds the greater pelvis laterally. It presents for examination two surfaces—an external and an internal—a crest, and two borders—an anterior and a posterior.
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The anterior gluteal line (middle curved line), the longest of the three gluteal lines, begins at the crest, about 4 cm. behind its anterior extremity, and, taking a curved direction downward and backward, ends at the upper part of the greater sciatic notch.
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The inferior gluteal line (inferior curved line), the least distinct of the three gluteal lines, begins in front at the notch on the anterior border, and, curving backward and downward, ends near the middle of the greater sciatic notch.
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The iliac fossa is a large, smooth, concave surface on the internal surface of the ilium (part of the hip bone). The fossa is bounded above by the crest, and below by the arcuate line; in front and behind, by the anterior and posterior borders.
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iliac tuberosity, is elevated and rough, for the attachment of the posterior sacroiliac ligaments and for the origins of the Sacrospinalis and Multifidus.

This article was originally based on an entry from a public domain edition of Gray's Anatomy.
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The crest of the ilium (or iliac crest) is convex in its general outline but is sinuously curved, being concave inward in front, concave outward behind.

It is thinner at the center than at the extremities, and ends in the anterior and posterior superior iliac spines.
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The anterior superior iliac spine (ASIS) is an important landmark of surface anatomy. It refers to the anterior extremity of the iliac crest of the pelvis, which provides attachment for the inguinal ligament and the sartorius muscle.
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anterior inferior iliac spine, which ends in the upper lip of the acetabulum.

It gives attachment to the straight tendon of the Rectus femoris and to the iliofemoral ligament of the hip-joint.
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posterior superior iliac spine serves for the attachment of the oblique portion of the posterior sacroiliac ligaments and the Multifidus.

External links

  • SUNY Figs 01:01-14 - "Posterior view of the skeleton of the trunk.

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posterior inferior iliac spine corresponds with the posterior extremity of the auricular surface.

Additional images



The posterior aspect of the rectum exposed by removing the lower part of the sacrum and the coccyx.

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The ischium forms the lower and back part of the hip bone. It is situated below the ilium. The word comes from the Greek ischion, meaning "hip." (Taber's, 1985)

It is divisible into three portions:
  • Body of ischium
  • Superior ramus of the ischium

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The body of the ischium enters into and constitutes a little more than two-fifths of the acetabulum.

Surfaces

Its external surface forms part of the lunate surface of the acetabulum and a portion of the acetabular fossa.
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ischial spine, more or less elongated in different subjects.

Surfaces


external surface gives attachment to the Gemellus superior
internal surface gives atttachment to the Coccygeus, Levator ani, and the pelvic fascia
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Below the ischial spine is a smaller notch, the lesser sciatic notch; it is smooth, coated in the recent state with cartilage, the surface of which presents two or three ridges corresponding to the subdivisions of the tendon of the Obturator internus, which winds over it.
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The superior ramus of the ischium (descending ramus) projects downward and backward from the body and presents for examination three surfaces: external, internal, and posterior.

The external surface is quadrilateral in shape.
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tuberosity of the ischium (or ischial tuberosity).

It marks the lateral boundary of the pelvic outlet.

When sitting, the weight is frequently placed upon the ischial tuberosity.
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