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This is also called the obstetric anteroposterior diameter of the pelvic outlet, to distinguish from the anatomic one which includes the coccyx. [7] However, the coccyx is normally pushed away during childbirth by laxity in the sacrococcygeal joint. [8] 9.5 to 11.5 cm. [6] Intertuberous diameter Axial plane: The closest bony points of the ...
The lower circumference of the lesser pelvis is very irregular; the space enclosed by it is named the inferior aperture or pelvic outlet. It is an important component of pelvimetry . Boundaries
Projectional radiography, also known as conventional radiography, [1] is a form of radiography and medical imaging that produces two-dimensional images by X-ray radiation.The image acquisition is generally performed by radiographers, and the images are often examined by radiologists.
An X-ray film obtained in the AP view of the pelvic inlet and outlet will show a marked gap between the pubic bones. [3] A normal pelvis will show a gap that is 4–5 mm. However, in pregnancy the hormonal influences cause relaxation of the connecting ligaments and the bones separate up to 9 mm. A gap measuring greater than 10 mm indicates a ...
The standard set of X-rays for a skeletal survey includes X-rays of the skull, entire spine, pelvis, ribs, both humeri and femora (proximal long bones). It is more effective than isotope scans at detecting bone involvement in multiple myeloma. Although significantly less sensitive than MRI, it is easier to include more bones. A study found that ...
X-ray of the hips of a 40-year-old female, with dysplasia of her right hip. In the adult hip there are important landmarks to be recognized on plain film radiographs: [ 3 ] The iliopectineal or iliopubic line is formed by the arcuate line of the ilium and the superior border of the superior pubic ramus up to the pubic symphysis.
Evaluating the position of the triradiate cartilage on an AP radiograph of the pelvis with both Perkin's line and Hilgenreiner's line can help establish a diagnosis of developmental dysplasia of the hip.
The pelvic inlet or superior aperture of the pelvis is a planar surface which defines the boundary between the pelvic cavity and the abdominal cavity (or, according to some authors, between two parts of the pelvic cavity, called lesser pelvis and greater pelvis).