/sak'roh il"ee ak', say'kroh-/, Anat.
1. the joint where the sacrum and ilium meet.
2. of, pertaining to, or affecting this joint.
[1825-35; SACRO- + ILIAC]

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      weight-bearing synovial joint that articulates, or connects, the hip bone with the the sacrum at the base of the spinal column. Strong ligaments around the joint help to stabilize it in supporting the weight of the upper body; the joint's motion is also limited by the irregular surfaces of the sacrum (the fused vertebrae of the lower spine), which closely articulate with the ilium (the uppermost of the three bones composing each half of the pelvis). The sacroiliac's movement is consequently very slight or none at all. The joint is, in effect, narrow vertical slits on the left and right sides of the sacrum where it connects with the ilium bones. The space between the sacrum and the hip bone is occupied by a small cavity filled with synovial fluid (which cushions the joint against pressure) and by a fibrous mass of strong cartilage.

      The most common diseases affecting the sacroiliac are degenerative processes such as arthritis or ankylosing spondylitis. Most adults, especially men, have some sacroiliac deterioration; with advanced age, the joint may be greatly reduced or nonexistent. Hormones produced during pregnancy soften and loosen the pelvic ligaments in women to allow stretching during childbirth and may delay the degeneration somewhat.

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Universalium. 2010.

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Look at other dictionaries:

  • sacroiliac — SACROILIÁC, Ă adj. iliosacral. (< fr. sacroiliaque) Trimis de raduborza, 15.09.2007. Sursa: MDN …   Dicționar Român

  • sacroiliac — [sak΄rō il′ē ak΄, sā΄krōil′ē ak΄] adj. [ SACRO + ILIAC] of the sacrum and the ilium; esp., designating the joint between them n. the joint or cartilage between the sacrum and the ilium …   English World dictionary

  • sacroiliac — Relating to the sacrum and the ilium. * * * sa·cro·il·i·ac .sak rō il ē .ak, .sā krō adj of, relating to, affecting, or being the region of the joint between the sacrum and the ilium <sacroiliac distress> sacroiliac n SACROILIAC JOINT * * * …   Medical dictionary

  • sacroiliac — I. |sakrō|ilēak also |sāk adjective Etymology: International Scientific Vocabulary sacr (II) + iliac : of, relating to, or affecting the sacroiliac sacroiliac distress II …   Useful english dictionary

  • sacroiliac — I. adjective Etymology: probably from French sacro iliaque, from New Latin sacrum + French iliaque iliac Date: 1831 of, relating to, or being the region of juncture of the sacrum and ilium II. noun Date: 1936 the sacroiliac region; also its firm… …   New Collegiate Dictionary

  • sacroiliac joint — n the joint or articulation between the sacrum and ilium called also sacroiliac, sacroiliac articulation * * * articulatio sacroiliaca …   Medical dictionary

  • Sacroiliac joint — Infobox Anatomy Name = Sacroiliac joint Latin = articulatio sacroiliaca GraySubject = 80 GrayPage = 306 Caption = Articulations of pelvis. Anterior view. Caption2 = Articulations of pelvis. Posterior view. System = MeshName = MeshNumber =… …   Wikipedia

  • sacroiliac disease — chronic tuberculous inflammation of the sacroiliac joint …   Medical dictionary

  • sacroiliac — 1. adjective Referring to the region of the sacrum and the ilium in the lower back. 2. noun The region of the sacrum and the ilium in the lower back …   Wiktionary

  • sacroilíac — sa|croi|lí|ac Mot Pla Adjectiu variable …   Diccionari Català-Català

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