Anterior Sacroiliac Ligament
Original Editor - Khloud Shreif Top Contributors - Khloud Shreif, Memoona Awan, Wendy Snyders and Kim Jackson
Description
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 Also called Ventral sacroiliac ligament. 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].
Attachments
It runs from the iliac ala, anterior to the auricular surface, to the sacrum's pelvic surface[3]. In the area between the psoas major and the cranial insertion of the obturator internus, the ventral sacroiliac ligament is closely related to lumbosacral trunk ( L4-L5), and obturator nerve. The major blood vessels ( iliac artery and vein) can also be found nearby.
Function
The ASL has very little effect on pelvic stability and compared to the posterior sacroiliac ligament, it has little influence on SIJ mobility[4].
Assessment
The anterior sacroiliac ligament is a weak and thin ligament that runs over the front of the SI joint and blends with the joint capsule and it may be a significant source of pain due to innervation of pain receptors.. There are various provocation tests for the sacroiliac joint but none of them isolate the anterior sacroiliac joint ligament.
References
- ↑ 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.
- ↑ 2.0 2.1 WONG M, SINKLER M, KIEL J. Anatomy, Abdomen and Pelvis, Sacroiliac Joint. StatPearls. Treasure Island (FL).
- ↑ 1. MD GS. Sacroiliac joint [Internet]. Kenhub; 2022 [cited 2023 Aug 7]. Available from: https://www.kenhub.com/en/library/anatomy/sacroiliac-joint
- ↑ 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.