Lumbosacral ligament
Ligament of the spine
From Wikipedia, the free encyclopedia
The lumbosacral ligament or lateral lumbosacral ligament is a ligament that helps to stabilise the lumbosacral joint. The ligament's medial attachment is at (the inferior border of) transverse process of lumbar vertebra L5; its lateral attachment is at the ala of sacrum.[2]
| Lumbosacral ligament | |
|---|---|
Articulations of pelvis, anterior view (lumbosacral ligament labeled at center top). | |
| Details | |
| Identifiers | |
| Latin | ligamentum lumbosacrale[1] |
| Anatomical terminology | |
The lumbosacral ligament extends obliquely inferior-ward from its medial attachment. Superiorly, it is partially continuous with the inferior margin of the iliolumbar ligament[2] (the lumbosarcal ligament can be considered an inferior subdivision of the iliolumbar ligament).[1]
Research
According to a cadaveric study, the lumbosacral ligament forms a roof of a lumbosacral tunnel which is traversed by the (ipsilateral) lumbar spinal nerve L5; the tunnel may be the site of extraforaminal nerve entrapment due to mass effect of local pathologies.[3]