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Sacrospinous ligament information


Sacrospinous ligament
Articulations of pelvis, anterior view, with greater sciatic foramen (labeled in red) and its boundaries.
Details
FromIschial spine
ToSacrum
Identifiers
Latinligamentum sacrospinale
TA98A03.6.03.007
TA21852
FMA21485
Anatomical terminology
[edit on Wikidata]

The sacrospinous ligament (small or anterior sacrosciatic ligament) is a thin, triangular ligament in the human pelvis. The base of the ligament is attached to the outer edge of the sacrum and coccyx, and the tip of the ligament attaches to the spine of the ischium, a bony protuberance on the human pelvis. Its fibres are intermingled with the sacrotuberous ligament.

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Lesser sciatic foramen

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formed by the sacrotuberous ligament which runs between the sacrum and the ischial tuberosity and the sacrospinous ligament which runs between the sacrum...

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the pelvis through the greater sciatic foramen superior to the sacrospinous ligament. In around 80% of the population, the sciatic nerve travels below...

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Pudendal nerve entrapment

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piriformis muscle, entrapment that occurs between the sacrospinous ligament and sacrotuberous ligament (most common cause), entrapment in the Alcock canal...

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Greater sciatic foramen

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the posterior human pelvis. It is formed by the sacrotuberous and sacrospinous ligaments. The piriformis muscle passes through the foramen and occupies most...

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posterior sacroiliac ligament interosseous sacroiliac ligament ligaments connecting the sacrum and ischium: sacrotuberous ligament sacrospinous ligament...

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Greater sciatic notch

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inferior iliac spine (above), and the ischial spine (below). The sacrospinous ligament changes this notch into an opening, the greater sciatic foramen...

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either side to the sacrotuberous and sacrospinous ligaments, to the coccygeus and levator ani in front of the ligaments, and to the gluteus maximus behind...

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Posterior sacroiliac ligament

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