🦴 Pelvis joint area 🦴 Pelvis joint

sacroiliac

1 8.4

The joint at the back of the pelvis between the lower spine and hip bone

noun
/ˌsækrəʊˈɪliæk/

Specialized

: articulación sacroilíaca

The physical therapist explained that the sacroiliac joint connects the sacrum to the ilium bones.

Examples

Ooh, my s-s-sacroiliac.

The Jungle Book (1967)
"The knees are just as bad as the sacroiliac today.

Fiction book (1995)
My sacroiliac.

The Pirates Who Don't Do Anything: A VeggieTales Movie (2008)
The sacroiliac.

It's Always Fair Weather (1955)
After a long day of hiking, I felt pain in my sacroiliac joint.
Having an inflamed sacroiliac can make it difficult to walk comfortably.

Surface Forms

sacroiliac singular

sacroiliacs plural

Morphology

sacroiliac = sacrum + iliac (transparent) = sacro + iliac

Denotes the joint of the sacrum and ilium by directly combining sacro- and iliac, so the relation is straightforward for those familiar with the anatomical terms.

Etymology

Sacroiliac comes from Latin parts sacro- (from sacer, 'sacred') and -iliac (from ilium, 'hip'). A helpful way to remember is that the 'sacred' sacrum meets the hip bone, so the sacroiliac is the joint where those bones meet.