sacroiliac

sacroiliac /sa·cro·il·i·ac/ (-il´e-ak) pertaining to the sacrum and ilium, or to their articulation.

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sac·ro·il·i·ac (skr-l-k, skr-)

adj.

Of, relating to, or affecting the sacrum and ilium and their articulation or associated ligaments.

n.

The sacroiliac region or cartilage.

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sacroiliac

[sā′krō·il′ē·ak]

Etymology: L, sacer + ilium, flank

pertaining to the part of the skeletal system that includes the sacrum and the ilium bones of the pelvis.

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sacroiliac [sa″kro-il´e-ak]

pertaining to the sacrum and ilium, or the joint formed between them, or to the lower part of the back where they meet.

sacroiliac disease chronic tuberculous inflammation of the sacroiliac joint.

sacroiliac joint the joint formed by the sacrum and ilium where they meet on either side of the lower back. The tight joint allows little motion and is subject to great stress, as the body's weight pushes downward and the legs and pelvis push upward against the joint. The sacroiliac joint must also bear the leverage demands made by the trunk of the body as it turns, twists, pulls, and pushes. When these motions place an excess of stress on the ligaments binding the joint and on the connecting muscles (such as during weight lifting), strain may result.

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sacroiliac,

adj pertaining to the immoveable joint formed by the sacrum of the inferior spinal column and the ilium of the posterior pelvis.

Sacroiliac.

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sacroiliac

pertaining to the sacrum and the ilium, or the joint between these two bones, or to the part of the back where these bones meet on both sides of the back.

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sacroiliac joint

see Table 11.