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The pelvic brim is the edge of the pelvic inlet. It is an approximately butterfly-shaped line passing through the prominence of the sacrum, the arcuate and pectineal lines, and the upper margin of the pubic symphysis.




Structure


The pelvic brim is an approximately butterfly-shaped line passing through the prominence of the sacrum, the arcuate and pectineal lines, and the upper margin of the pubic symphysis.
The pelvic brim is obtusely pointed in front, diverging on either side, and encroached upon behind by the projection forward of the promontory of the sacrum.
The oblique plane passing approximately through the pelvic brim divides the internal part of the pelvis (pelvic cavity) into the false or greater pelvis and the true or lesser pelvis. The false pelvis, which is above that plane, is sometimes considered to be a part of the abdominal cavity, rather than a part of the pelvic cavity. In this case, the pelvic cavity coincides with the true pelvis, which is below the above-mentioned plane.
The urinary bladder lies just above the anterior pelvic brim. The sigmoid colon also passes close to the pelvic brim.




Clinical significance


The pelvic brim may be a site of compression of structures that pass through the pelvic inlet. This can include the femoral nerves, which may occur during abdominal surgery.




See also


Linea terminalis
Pelvis justo major
Pelvic inlet




Additional images











References


This article incorporates text in the public domain from page 238 of the 20th edition of Gray's Anatomy (1918)

Kata Kunci Pencarian:

• Pelvic brim
• Hip bone
• Pelvic inlet
• Pelvic cavity
• Pelvis
• Abdomen
• Pelvic floor
• Brim sign
• Pelvic fascia
• Sacrum

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Pelvic brim - Wikipedia

The pelvic brim is the edge of the pelvic inlet. It is an approximately butterfly-shaped line passing through the prominence of the sacrum, the arcuate and pectineal lines, and the upper margin of the pubic symphysis.

Pelvic brim - Clinical Anatomy

25 Mar 2014 · The pelvic brim is an oval-shaped bony ridge in the pelvis formed by components of the sacrum, ilium, pubic bone, and symphysis pubis.

The Pelvic Girdle - Structure - Function - TeachMeAnatomy

07 Feb 2022 · The pelvic girdle is a ring-like structure, located in the lower part of the trunk. It connects the axial skeleton to the lower limbs. In this article, we shall look at the structures of the pelvis, its functions, and the applied anatomy.

Anatomy, Abdomen and Pelvis: Female Pelvic Cavity

24 Jul 2023 · The pelvic cavity is a bowl-like structure that sits below the abdominal cavity. The true pelvis, or lesser pelvis, lies below the pelvic brim (Figure 1). This landmark begins at the level of the sacral promontory posteriorly and the pubic symphysis anteriorly.

Pelvic and Acetabular Anatomy - Orthopaedic Trauma …

Pelvic and Acetabular Anatomy Alesha N. Scott, DO, FAAOS. Medical Director of Orthopedic Trauma. Bryan Health

Pelvic brim sign | Radiology Reference Article - Radiopaedia.org

13 Nov 2023 · The pelvic brim sign is seen in the AP view of the pelvis and refers to a thickening of the pelvic brim outlined by the iliopectineal line. It is due to an osteoblastic reaction seen and first described in Paget disease, which leads to cortical thickening and sclerosis 1.

Anatomy, Bony Pelvis and Lower Limb: Pelvis Bones

30 Jul 2023 · The pelvic brim is the line formed by the continuation of the pectineal line on the pubic bones, the arcuate line of the ilium, and the ala of the sacrum. Below this brim is defined as the ‘true pelvis,’ whereas the ‘false pelvis’ above this line is, in fact, part of the abdominal cavity.

Pelvic brim | definition of pelvic brim by Medical dictionary

the upper opening of the true pelvis, bounded anteriorly by the pubic symphysis and the pubic crest on either side, laterally by the iliopectineal lines, and posteriorly by the promontory of the sacrum.

Pelvic inlet: Anatomy and function - Kenhub

13 Mar 2024 · It is outlined by the pelvic brim, a bony oval ring formed by the superior surfaces and bony edges of the promontory and ala of the sacrum, along with the iliac and pubic bones, which are joined at the midline by the pubic symphysis. Together, these elements delineate the rim of the pelvic inlet.

Linea Terminalis - (Anatomy and Physiology I) - Fiveable

The linea terminalis, also known as the pelvic brim, is an anatomical landmark that defines the boundary between the false pelvis and the true pelvis. It is an important structure in the context of the pelvic girdle and pelvis.