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The ischial spine is part of the posterior border of the body of the ischium bone of the pelvis. It is a thin and pointed triangular eminence, more or less elongated in different subjects. It is a thin and pointed triangular eminence, more or less elongated in different subjects.
The body contains a prominent spine, which serves as the origin for the superior gemellus muscle. The indentation inferior to the spine is the lesser sciatic notch. Continuing down the posterior side, the ischial tuberosity is a thick, rough-surfaced prominence below the lesser sciatic notch. This is the portion that supports weight while ...
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.
Ischial spine, part of the posterior border of the body of the ischium bone of the pelvis; Mental spine, on the mandible; Anterior nasal spine, a bony projection in the skull; Posterior nasal spine, for the attachment of the musculus uvulae; Spine of scapula, a prominent plate of bone; Spine of sphenoid bone (spina angulari) and ethmoidal spine
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Below the ischial spine is a small 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.
The greater sciatic foramen is an opening in the posterior human pelvis.It is formed by the sacrotuberous and sacrospinous ligaments.The piriformis muscle passes through the foramen and occupies most of its volume.
The greater sciatic notch is a notch in the ilium, one of the bones that make up the human pelvis.It lies between the posterior inferior iliac spine (above), and the ischial spine (below).