Triquetrocapitate ligament

Changed by Henry Knipe, 10 Aug 2023

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Disclosures - updated 16 Jan 2023:

Integral Diagnostics, Shareholder (ongoing)
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Published At was set to 2023-08-10T22:09:56.011Z.

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The triquetrocapitate ligament is one of the palmar intrinsic midcarpal ligaments ¹. ~~It, along~~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 ~~confluent~~contiguous 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 ligament ³.

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.

-<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>
+<p>The<strong> triquetrocapitate ligament </strong>is one of the palmar intrinsic midcarpal ligaments <sup>1</sup>. Along with the <a href="/articles/triquetrohamate-ligament" title="Triquetrohamate ligament">triquetrohamate ligament</a> this ligament forms the triquetrohamocapitate ligament, which forms the ulnar limb of the arcuate ligament of the wrist <sup>1,2</sup>. It is often contiguous with the <a href="/articles/ulnocapitate-ligament" title="Ulnocapitate ligament">ulnocapitate ligament</a>, and indirectly stabilises the <a href="/articles/lunate-1" title="Lunate">lunate</a> 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 <a href="/articles/midcarpal-instability" title="midcarpal instability">midcarpal instability</a> <sup>5</sup>.</p><h4>See also</h4><ul><li><p><a href="/articles/wrist-ligaments">wrist ligaments</a></p></li></ul>

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