The posterior sacroiliac
ligament
A ligament is a type of fibrous connective tissue in the body that connects bones to other bones. It also connects flight feathers to bones, in dinosaurs and birds. All 30,000 species of amniotes (land animals with internal bones) have liga ...
is situated in a deep depression between the
sacrum and
ilium behind; it is strong and forms the chief bond of union between the
bone
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, ...
s.
It consists of numerous
fasciculi, which pass between the bones in various directions.
* The ''upper part'' (''short posterior sacroiliac ligament'') is nearly horizontal in direction, and pass from the first and second transverse tubercles on the back of the sacrum to the
tuberosity of the ilium.
* The ''lower part'' (''long posterior sacroiliac ligament'') is oblique in direction; it is attached by one extremity to the third transverse tubercle of the back of the sacrum, and by the other to the
posterior superior spine of the ilium.
See also
*
Anterior sacroiliac ligament
References
External links
* ()
Ligaments of the torso
Ligaments
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