Triquetrocapitate ligament
Updates to Article Attributes
The triquetrocapitate ligament is one of the palmar intrinsic midcarpal ligaments 1. It, along with the triquetrohamate ligament, forms the triquetrohamocapitate which forms the ulnar limb of the arcuate ligament of the wrist 1,2. It is often confluent with the ulnocapitate ligament, and indirectly stabilises the lunate by contributing to the arcuate ligament 1,2.
Gross anatomy
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 ligament3.
Radiographic features
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.
Related pathology
Insufficiency of failure of the triquetrohamocapitate ligament can lead to ulnar palmar midcarpal instability 5.
See also
- +<p>The<strong> triquetrocapitate ligament </strong>is one of the palmar intrinsic midcarpal ligaments <sup>1</sup>. It, along with the <a href="/articles/triquetrohamate-ligament" title="Triquetrohamate ligament">triquetrohamate ligament</a>, forms the triquetrohamocapitate which forms the ulnar limb of the arcuate ligament of the wrist <sup>1,2</sup>. It is often confluent with the <a href="/articles/ulnocapitate-ligament" title="Ulnocapitate ligament">ulnocapitate ligament</a>, and indirectly stabilises the lunate by contributing to the arcuate ligament <sup>1,2</sup>.</p><h4>Gross anatomy</h4><p>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 <a href="/articles/triquetrohamate-ligament" title="triquetrohamate ligament">triquetrohamate ligament</a> <sup>3</sup>.</p><h4>Radiographic features</h4><h5>MRI</h5><p>The triquetrocapitate ligament may be seen as a mirror image of the orientation of the <a href="/articles/scaphocapitate-ligament" title="Scaphocapitate ligament">scaphocapitate ligament</a>, running between its two attachments obliquely on the volar aspect of the wrist <sup>3</sup>. 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 <sup>4</sup>.</p><h4>Related pathology</h4><p>Insufficiency of failure of the triquetrohamocapitate ligament can lead to ulnar palmar midcarpal instability <sup>5</sup>.</p><h4>See also</h4><ul><li><p><a href="/articles/wrist-ligaments">wrist ligaments</a></p></li></ul>
References changed:
- 1. Susan Standring. Gray's Anatomy. (2020) ISBN: 9780702077050 - <a href="http://books.google.com/books?vid=ISBN9780702077050">Google Books</a>
- 2. Jon C. Thompson. Netter's Concise Orthopaedic Anatomy E-Book, Updated Edition. (2015) ISBN: 9780323430432 - <a href="http://books.google.com/books?vid=ISBN9780323430432">Google Books</a>
- 3. Berger R. The Anatomy of the Ligaments of the Wrist and Distal Radioulnar Joints. Clin Orthop Relat Res. 2001;383(383):32-40. <a href="https://doi.org/10.1097/00003086-200102000-00006">doi:10.1097/00003086-200102000-00006</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/11210966">Pubmed</a>
- 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. <a href="https://doi.org/10.1007/s00256-009-0796-5">doi:10.1007/s00256-009-0796-5</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/19820928">Pubmed</a>
- 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. <a href="https://doi.org/10.1007/s00256-006-0251-9">doi:10.1007/s00256-006-0251-9</a> - <a href="https://www.ncbi.nlm.nih.gov/pubmed/17225149">Pubmed</a>
Image 1 MRI (PD fat sat) ( create )
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