Anterior Sacroiliac Ligament: Difference between revisions

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Anterior sacroiliac ligament

Anterior sacroiliac ligament (ASL) is comprised of many thin strands and forms from a thickened part of the anterior joint capsule[1][2] . It is a smooth sheet of dense connective tissue stretching between the ventral surfaces of the sacral alar and ilium[1]. It is the thinnest sacroiliac joint ligament[2] and is larger in males[1].

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It runs from the iliac ala, anterior to the auricular surface, to the sacrum’s pelvic surface[3].

The ASL has very little effect on pelvic stabilityand compared to the posterior sacroiliac ligament, it has little influence on SIJ mobility[4].

There are various provocation tests for the sacroiliac joint but none of them isolate the anterior sacroiliac joint ligament.

  1. 1.0 1.1 1.2 Vleeming A, Schuenke MD, Masi AT, Carreiro JE, Danneels L, Willard FH. The sacroiliac joint: an overview of its anatomy, function and potential clinical implications. Journal of anatomy. 2012 Dec;221(6):537-67.
  2. 2.0 2.1 WONG M, SINKLER M, KIEL J. Anatomy, Abdomen and Pelvis, Sacroiliac Joint. StatPearls. Treasure Island (FL).
  3. 1. MD GS. Sacroiliac joint [Internet]. Kenhub; 2022 [cited 2023 Aug 7]. Available from:
  4. Kiapour A, Joukar A, Elgafy H, Erbulut DU, Agarwal AK, Goel VK. Biomechanics of the sacroiliac joint: anatomy, function, biomechanics, sexual dimorphism, and causes of pain. International journal of spine surgery. 2020 Feb 1;14(s1):S3-13.

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