iliac tuberosity(redirected from Tuberosity of the ilium)
a rough area above the auricular surface on the medial aspect of the ala of the ilium, giving attachment to the interosseous and posterior sacroiliac ligaments.
Synonym(s): tuberositas iliaca [TA]
a rough elevation of the posterior iliac crest to which the posterior sacroiliac ligaments are attached. It is also a point of origin of the erector spinae and multifidus muscles.