sacroiliac articulation

sa·cro·il·i·ac joint

the synovial joint on either side between the auricular surface of the sacrum and that of the ilium.
Farlex Partner Medical Dictionary © Farlex 2012
References in periodicals archive ?
The sacroiliac articulation, however, was unaffected [Figure 3a].
This edition has updated and expanded content on joint assessment, joint subluxation/dysfunction, adjustive mechanics, and sacroiliac articulation, and updated and modified procedures, and it names each of the adjustive procedures following patterns used by the US National Board of Chiropractic Examiners.
In fact, overuse or accumulation of micro-trauma of the sacroiliac articulation, that may have occurred during horseback riding, could have led to dysfunction and caused inflammation inside the joint.