Ala of sacrum
Ala ossis sacri
- Latin synonym: Ala ossis sacralis
- Synonym: Wing of sacrum
- Related terms: Ala; Wing of sacrum
Definition
The ala of sacrum is the upper part of the lateral part of sacrum, lateral to the first sacral vertebra.
It is a large triangular surface, which supports the Psoas major and the lumbosacral trunk, and in the articulated pelvis is continuous with the iliac fossa. It is slightly concave from side to side, convex from before backward, and gives attachment to a few of the fibers of the Iliacus.
References
Text by Antoine Micheau, MD - Copyright IMAIOS
![Ala of sacrum - Radiography spine - Lumbar vertebrae [LI-LV] - e-Anatomy](https://cdn.imaios.cn/i/imaios-images/web/images/eanatomy/modules/rachis-radios/images/v1/337bf9f232cfda5f93aa1055a9f082ba76f6be33cd7782b5e747018ef9aaa2b4?ar=640:670&auto=format,compress&bg=000000&fit=crop&p64=NzIsMzEx&t=QWxhIG9mIHNhY3J1bQ&tx=72&ty=311&w=200&wk=1&s=2a93cf7cbfeb9c85ef2604488a84dada "Ala of sacrum - Radiography spine - Lumbar vertebrae [LI-LV] - e-Anatomy")
