ala of sacrum(redirected from ala sacralis)
a·la of sacrum[TA]
the upper surface of the lateral part of the sacrum adjacent to the body.
ala of sacrum
Broad projection on each side of the base (the superior end) of the sacrum. The alae of the sacrum join the main plates (alae) of the ilium bones along the sacroiliac joints.
See also: ala