The posterior sacroiliac
ligament
A ligament is the fibrous connective tissue that connects bones to other bones. It is also known as ''articular ligament'', ''articular larua'', ''fibrous ligament'', or ''true ligament''. Other ligaments in the body include the:
* Peritoneal l ...
is situated in a deep depression between the
sacrum
The sacrum (plural: ''sacra'' or ''sacrums''), in human anatomy, is a large, triangular bone at the base of the spine that forms by the fusing of the sacral vertebrae (S1S5) between ages 18 and 30.
The sacrum situates at the upper, back part ...
and
ilium behind; it is strong and forms the chief bond of union between the
bones.
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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