Topic: Pelvis Bone
Name: Giovanny Armando Chamorro Argoty
Code: 90022558080
The pelvis is defined as the inferoposterior part of the trunk of the abdomen, which is lined inside and out for muscular structures. The pelvis is closed below by a set musculofascial perineum and is open up toward the abdomen.
is how we define the pelvis bone marrow as a closed ring, made subsequently by the sacrum and coccyx (are part of the spine), laterally and in front of the coxal bones, which protect the distal portions of intestinal and urinary tracts as well as genital organs internal.
forming the pelvic cavity, shaped infundibulum, where the upper limit of the pelvic cavity is the superior strait of the pelvis and the lower limit is the narrow lower pelvis.
The main function of the bony pelvis:
· To transmit the weight of the upper body axial skeleton, the appendix below.
• Resists compression forces and other support resulting from the body.
innominate bone is a narrow flattened in its central part, which contains a hemispherical cavity called the acetabulum, located in the lateral and articulated with the femur. The top side and is oriented slightly backward and lateral and anterior is oriented above.
presents an oval-shaped opening, the obturator foramen.
is becoming an adult by the fusion of three bones (at the acetabulum), the ilium, pubis and ischium.
· The ilium is the top and concave (forming the lower quadrant), which opens like a fan, the cost of a body that helps to close the socket and a wing that represents the semicircle of the range, the iliac crest is her edge fan, which runs the coccyx between the anterior superior iliac spines and posterior superior.
• The pubis consists of a flattened body, forming the anterior part of the pelvis, formed by an upper branch that helps form the acetabulum, as well as the lateral portion of this branch, forming a sloping ridge: line dentate pubis. And a lower branch that contributes to form the plug. The thickening at the top of the pubis up to the pubic crest is located more laterally and the pubic tubercle. The body of the pubis is built on the opposite side, forming the pubic symphysis
The innominate presents an outer face, an inner face and four edges: top, inferior, anterior and posterior.
The outer side has a gluteal region, the acetabulum and obturator foramen.
• The gluteal region is undulating and crossed by three curved lines, anterior gluteal line, posterior end to the anterior superior iliac spine, posterior gluteal line, gluteal line almost vertical and lower variable almost horizontal.
·
The acetabulum is a hemispherical cavity facing side, bottom and above, which is surrounded by the limb of the acetabulum and on top form supraacetabulo groove. At the bottom, the limb is interrupted by the notch of the acetabulum. At the bottom of the cavity has a central part rough, acetabular fossa, surrounded by lunada face, this is where the femoral head articulates. The obturator foramen bounded by the pubis and ischium.
The inner surface of the bone is divided by the arcuate line, slanting downward and forward, above the pecten pubis. At the top line, above the iliac fossa is formed and later face sacropelvic headset and face. We also find that on the face headset is the iliac tuberosity. Lower
the arcuate line, the pelvic segment of the internal surface with a smooth surface.
· Edges:
or upper edge corresponds to the iliac crest, which has a middle line that separates outer and inner lips. O
edge shows the anterior superior iliac spine, a notch and anterior iliac spine.
or bottom edge forms a bottom edge to the bone opposite the pubic arch
or posterior edge shows the posterior iliac spines and lower sciatic notch higher and the ischial tuberosity.
The bony pelvis is divided into major pelvis minor pelvis or false or true, crossed by an oblique plane that elapses from the sacral promontory and terminal lines.
· top of the pelvis Strait separates the pelvis major pelvis minor, defined by a horizontal plane that courses from the sacral promontory to the upper edge of the pubic symphysis. That is bordering on the edge of the wing of the sacrum, the arcuate line of the ileum and the pecten.
· Lower pelvis narrow limits lower edge of the symphysis pubis, inferior pubic branches and apex of the coccyx in the back.
· Pelvis more: located on the brim of the pelvis, contains some abdominal organs such as the ilium, the sigmoid colon. Formed by the wings of the sacrum and the iliac arteries. Limited
above through the abdominal wall, posterolateral to the posterior iliac fossa and L5 and S1 vertebrae. Pelvis minor
· Strait lies between the upper and lower pelvis contains pelvic viscera, urinary bladder and reproductive organs.
· Subsequently formed by face pelvic sacrum and coccyx and above the inner surface of the pubic symphysis.
has a top opening surrounded by a lower line terminals and limited by the apex of the coccyx, the ischial tuberosity and ischiatic classes.
In upright position, where the ESIA and the front of the symphysis pubis are in the same vertical plane. Thus the pubic symphysis to the horizontal form an angle of 45 degrees and the pelvis at an angle to the plane of the top opening is 60 degrees and the bottom opening is 15 degrees.
Pelvic sex differences that appear after puberty, due to the conical shape of the pelvis that occurs in fetuses. The female pelvis is wider and less high than the male, which is heavier and thicker, and also the female pelvis are more triangular foramen oval subpubico an angle approximately 60 degrees. In addition to the adaptation of the female pelvis labor dynamics. Sacrum
Located in the back of the pelvis between the bones in the adult iliacos.Es fusion of 5 sacral vertebrae, forming a triangular-shaped bone below apex. The concave front has 4 transverse ridges of the sacrum, at its ends and located pelvic sacral foramina, which emerge the ventral rami of the first four sacral nerves.
The convex top with the 5 lumbar vertebrae at an angle known as the promontory
In the dorsal, median sacral crest find where is the fusion of the spinous processes, the dorsal sacral foramina are aligned with the pelvic.
emerge from its top two horns articulate with the sacrum, so that its upper surface articulates with the sacral apex medial to the sacral foramina are intermediate peaks by melting articular processes and lateral them lateral sacral crests by the merger of trasversos processes.
The sides have headphones faces for articulation with the posterior pelvic bone and it forms the sacral ala. Bone
coccyx results from the fusion of 4 or 5 vertebrae atrophied, odd and irregular triangular-shaped medium.
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The tail bone is not inside the spinal canal.
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