Citation, DOI, disclosures and article data
Citation:
Lausen T, Knipe H, Triquetrocapitate ligament. Reference article, Radiopaedia.org (Accessed on 06 Jul 2024) https://doi.org/10.53347/rID-173064
Disclosures:
At the time the article was last revised Henry Knipe had the following disclosures:
- Integral Diagnostics, Shareholder (ongoing)
- Micro-X Ltd, Shareholder (ongoing)
These were assessed during peer review and were determined to
not be relevant to the changes that were made.
View Henry Knipe's current disclosures
The triquetrocapitate ligament is one of the palmar intrinsic midcarpal ligaments 1. Along with the triquetrohamate ligament this ligament forms the triquetrohamocapitate ligament, which forms the ulnar limb of the arcuate ligament of the wrist 1,2. It is often contiguous with the ulnocapitate ligament, and indirectly stabilizes the lunate by contributing to the arcuate ligament 1,2.
The triquetrocapitate ligament attaches proximally to the triquetrum at its distal and radial corner, and distally at the ulnar side of the capitate, running radially to the triquetrohamate ligament 3.
MRI
The triquetrocapitate ligament may be seen as a mirror image of the orientation of the scaphocapitate ligament, running between its two attachments obliquely on the volar aspect of the wrist 3. It is best viewed on a coronal plane, may be aided by ulnar deviation of the wrist, and may be more easily viewed with MR arthrography 4.
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Insufficiency of failure of the triquetrohamocapitate ligament can lead to ulnar palmar midcarpal instability 5.
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1. Susan Standring. Gray's Anatomy. (2020) ISBN: 9780702077050 - Google Books
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2. Jon C. Thompson. Netter's Concise Orthopaedic Anatomy E-Book, Updated Edition. (2015) ISBN: 9780323430432 - Google Books
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3. Berger R. The Anatomy of the Ligaments of the Wrist and Distal Radioulnar Joints. Clin Orthop Relat Res. 2001;383(383):32-40. doi:10.1097/00003086-200102000-00006 - Pubmed
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4. Gheno R, Buck F, Nico M, Trudell D, Resnick D. Differences Between Radial and Ulnar Deviation of the Wrist in the Study of the Intrinsic Intercarpal Ligaments: Magnetic Resonance Imaging and Gross Anatomic Inspection in Cadavers. Skeletal Radiol. 2009;39(8):799-805. doi:10.1007/s00256-009-0796-5 - Pubmed
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5. Chang W, Peduto A, Aguiar R, Trudell D, Resnick D. Arcuate Ligament of the Wrist: Normal MR Appearance and Its Relationship to Palmar Midcarpal Instability: A Cadaveric Study. Skeletal Radiol. 2007;36(7):641-5. doi:10.1007/s00256-006-0251-9 - Pubmed
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