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Palmar Ulnocarpal Ligament (Left)
Connective Tissue

Palmar Ulnocarpal Ligament (Left)

Ligamentum ulnocarpeum palmare

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Anatomical Relations

The palmar ulnocarpal ligament is considered an extrinsic ligament of the wrist joint. Its fibers fan out from the styloid process of the distal ulna to the palmar surfaces of the triquetrum, lunate, capitate, and pisiform carpal bones.

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The palmar ulnocarpal ligament is a strong, fibrous structure composed of multiple bundles of fibers, including the ulnocapitate, ulnolunate, ulnotriquetral, and ulnopisiform ligaments. The fibers of these ligaments are often confluent and indistinguishable from each other (Moritomo, 2013).


The palmar ulnocarpal ligaments strengthen the articular capsule of the radiocarpal joint and prevent displacement of the head of ulna.


Moritomo, H. (2013) 'Anatomy and Clinical Relevance of the Ulnocarpal Ligament', Journal of Wrist Surgery, 2(2), pp. 186-189.

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Joint Ligament

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Entheseal structures are widely located throughout the body and are represented by the interface between bone and several tissues including tendon, joint capsules and ligaments.

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