Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Of, relating to, or affecting the sacrum and ilium and their articulation or associated ligaments.
  • noun The sacroiliac region or cartilage.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective anatomy Referring to the region of the sacrum and the ilium in the lower back.
  • noun anatomy The region of the sacrum and the ilium in the lower back.

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

sacro- +‎ iliac

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Examples

  • One type of back pain, caused by looseness of the ligaments around the sacroiliac joint — near the hip — responds very well to prolotherapy, says Michael Osborne, assistant professor of physical medicine and rehabilitation at the Mayo Clinic in Jacksonville, Fla.

    A Pinch of Sugar for Pain Laura Johannes 2010

  • She may even feel it in her sacroiliac (SI) joints.

    I’ve got the full-of-baby whines « A Bird’s Nest 2008

  • Hobbled by an uncooperative sacroiliac, I unsteadily make my way into Washington Square Park for yet another of my continuing unappreciated efforts to let blog readers across the country know what New York literary events are really like -- as if you care.

    July 2007 2007

  • I wonder if my sacroiliac problem is actually an infection rather than an inflammation.

    Literary Death Match: Wednesday Night in Washington Square Park 2007

  • Hobbled by an uncooperative sacroiliac, I unsteadily make my way into Washington Square Park for yet another of my continuing unappreciated efforts to let blog readers across the country know what New York literary events are really like -- as if you care.

    Literary Death Match: Wednesday Night in Washington Square Park 2007

  • I take advantage of the free time and attempt one of my less conspicuous sacroiliac-joint stabilization exercises.

    Literary Death Match: Wednesday Night in Washington Square Park 2007

  • In December it got really bad… Doctor thinks it could have been set off by a bad sneeze (how sad is that), and my job (which is all sitting) compiled with a day of moving furniture, constantly carrying around my fat (25 lb) cat Tux… and even my chiropractor treatments (chiropractor was treating another problem with my sacroiliac, and misdiagnosed the leg pain as it as the IT band) made it really bad.

    Grumble grumble « knitnut.net 2009

  • My sacroiliac is still out of whack and the doctor medz make me woozy.

    Archive 2008-08-04 FUZZARELLY 2008

  • In this New Age, Pilates/yoga filled world there has to be something out there to get the kinks out of my sacroiliac.

    Mifflin Library and the rapidly aging farmer scusteister 2008

  • Bobby adjusted his long body to sit up on his buttocks rather than his sacroiliac.

    The Houseguest Thomas Berger 2008

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