Triangular ligament
Citation, DOI, disclosures and article data
Citation:
Gilcrease-Garcia B, Knipe H, Rezaee A, Triangular ligament. Reference article, Radiopaedia.org (Accessed on 14 Dec 2024) https://doi.org/10.53347/rID-61745
Permalink:
rID:
61745
Article created:
17 Jul 2018,
Brian Gilcrease-Garcia ◉
Disclosures:
At the time the article was created Brian Gilcrease-Garcia had no recorded disclosures.
View Brian Gilcrease-Garcia's current disclosures
Last revised:
Disclosures:
At the time the article was last revised Henry Knipe had no recorded disclosures.
View Henry Knipe's current disclosures
Revisions:
4 times, by
3 contributors -
see full revision history and disclosures
Systems:
Sections:
The triangular ligaments grouped with the ulnar collateral ligament and meniscal homologue, comprise the ulnar-sided components of the triangular fibrocartilage complex (TFCC). The triangular ligament attaches triangular fibrocartilage to the ulnar tip and fovea.
The triangular ligament is composed of two bands of collagen fibers and intervening loose connective tissue known as the ligamentum subcruentum:
- proximal lamina
- originates from the ulnar fovea, attach to the TFCC disc (i.e. triangular fibrocartilage) proper
- distal lamina
- originates from the ulnar styloid, attach to the TFCC disc proper and the meniscal homologue
- contributes to the ulnar joint capsule
Radiographic features
MRI
The composition corresponds to the ligament's striated appearance (collagen fibers) with central linear bright signal (subcruentum) on coronal plane MR imaging.
References
- 1. Burns JE, Tanaka T, Ueno T, Nakamura T, Yoshioka H. Pitfalls that may mimic injuries of the triangular fibrocartilage and proximal intrinsic wrist ligaments at MR imaging. (2011) Radiographics : a review publication of the Radiological Society of North America, Inc. 31 (1): 63-78. doi:10.1148/rg.311105114 - Pubmed
- 2. Ng AWH, Griffith JF, Fung CSY, Lee RKL, Tong CSL, Wong CWY, Tse WL, Ho PC. MR imaging of the traumatic triangular fibrocartilaginous complex tear. (2017) Quantitative imaging in medicine and surgery. 7 (4): 443-460. doi:10.21037/qims.2017.07.01 - Pubmed
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