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Posterior sacro-iliac ligament
Other Terms:
Posterior sacroiliac ligament,
Dorsal sacro-iliac ligament,
Posterior sacro-iliac ligament,
Ligamentum sacroiliacum posterius,
Ligament sacro-iliaque postérieur
Parts
None
Group
Lower limb joints - Pelvic girdle
Description
This is a series of flat ligamentous bands that cover the posterior aspect of the interosseous ligament. These bands pass from the intermediate and lateral crests of the sacrum's first through fourth segments to the posterior superior iliac spine and the iliac crest's internal lip. The lateralmost ligamentous bands blend with the sacrotuberous ligament.
Function
Stabilize the sacroiliac joint and limit anterior rotation and displacement of the pelvic girdle.
Latin
Ligamentum sacroiliacum posterius
French
Ligament sacro-iliaque postérieur