Sacrotuberous ligament
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View Henry Knipe's current disclosuresAt the time the article was last revised Mostafa Elfeky had no financial relationships to ineligible companies to disclose.
View Mostafa Elfeky's current disclosures- Sacrotuberous ligament (STL)
The sacrotuberous ligament (STL) is a stabilizer of the sacroiliac joint and connects the bony pelvis to the vertebral column.
Gross anatomy
The STL has a broad fan-like origin from the sacrum, coccyx, ilium and sacroiliac joint capsule. Its fibers converge to course caudally to insert into the medial ischial tuberosity and additional fibers (known as the falciform ligament) extend to the ischial ramus 1,3.
It forms a boundary between the greater and lesser sciatic foramen. Many of its fibers blend with other musculotendinous structures 1,3:
provides extensive insertion for the gluteus maximus muscle
distal fibers partially blend with the proximal tendon of the long head of biceps femoris
dorsal sacroiliac ligament
The sacrotuberous ligament is pierced by coccygeal branches of the inferior gluteal artery, the perforating cutaneous nerve, and branches of the coccygeal plexus 3.
Related pathology
-
pudendal nerve entrapment syndrome
may be secondary to sacrotuberous ligament calcification (see Case 1)
References
- 1. Bierry G, Simeone FJ, Borg-Stein JP et-al. Sacrotuberous ligament: relationship to normal, torn, and retracted hamstring tendons on MR images. Radiology. 2014;271 (1): 162-71. doi:10.1148/radiol.13130702 - Pubmed citation
- 2. McMINN. Lasts Anatomy Regional and Applied. CHURCHILL LIVINGSTONE. (2003) ISBN:B0084AQDG8. Read it at Google Books - Find it at Amazon
- 3. Mercer, S. R. "Anatomy in practice: the sacrotuberous ligament." NZ Journal of Physiotherapy 33 (2005): 3-92.
- 4. Loukas M, Louis RG, Hallner B et-al. Anatomical and surgical considerations of the sacrotuberous ligament and its relevance in pudendal nerve entrapment syndrome. Surg Radiol Anat. 2006;28 (2): 163-9. doi:10.1007/s00276-006-0082-3 - Pubmed citation
Incoming Links
- Ischioanal fossa
- Bony pelvis
- Coccyx
- Anococcygeal nerve
- Sacrospinous ligament
- Ilium
- Pudendal nerve
- Anal triangle
- Fluorosis
- Posterior sacroiliac ligament
- Sacroiliac joint
- Piriformis muscle
- Ischium
- Lesser sciatic foramen
- Gluteal muscles
- Open book pelvic injury
- Greater sciatic foramen
- Sacrum
- Gluteus maximus muscle
- Lesser sciatic notch
Related articles: Anatomy: Abdominopelvic
- skeleton of the abdomen and pelvis
- muscles of the abdomen and pelvis
- spaces of the abdomen and pelvis
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- broad ligament (mnemonic)
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