Lunotriquetral ligament

Dr Craig Hacking et al.

The lunotriquetral ligament joins the lunate and triquetrum of the carpals.

Gross anatomy

It arises from the volar aspect of the distal lunate and triangular fibrocartilage to distally attach to the medial margin of the hamate. With the ulnolunate ligament if is part of the triangular fibrocartilage complex

Similiar to the scapholunate ligament, it has 3 portions – volar, proximal and dorsal bands.

Dorsal component
  • most important component contributing to carpal stability
  • less flexible than the scapholunate ligament
  • limits the amount of dorsiflexion between the lunate and triquetrum
Volar component
  • very small, typically 1mm
  • linear in shape
  • runs parallel to the space between the lunate and triquetrum 
  • some fibers are joined by the volar ulnolunate ligament 
Proximal component
  • triangular in shape with apex directed distally
  • some fibers are joined by the superficial fibers of the volar radiolunate ligament

Related pathology

Complete tears of the dorsal band of the lunotriquetral ligament leads to volar intercalated segmental instability (VISI).

Anatomy: Upper limb
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Article information

rID: 67130
Section: Anatomy
Synonyms or Alternate Spellings:

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