Triquetral bone

Triquetral bone
Triquetral bone
	Left hand anterior view (palmar view). Triquetral bone shown in red.
	The left triquetal bone
Details
Articulations	Articulates with three bones:; lunate laterally; pisiform in front; hamate distally; triangular articular disk which separates it from the lower end of the ulna.
Identifiers
Latin	os triquetrum, os pyramidale
MeSH	D051221
TA98	A02.4.08.006
TA2	1253
FMA	23715
	Anatomical terms of bone

The triquetral bone (/traɪˈkwɛtrəl, -ˈkwiː-/; also called triquetrum, pyramidal, three-faced, and formerly cuneiform bone) is located in the wrist on the medial side of the proximal row of the carpus between the lunate and pisiform bones. It is on the ulnar side of the hand, but does not directly articulate with the ulna. Instead, it is connected to and articulates with the ulna through the Triangular fibrocartilage disc^[1] and ligament, which forms part of the ulnocarpal joint capsule.^[2] It connects with the pisiform, hamate, and lunate bones. It is the 2nd most commonly fractured carpal bone.

^ Manaster, B. J., Julia Crim "Imaging Anatomy: Musculoskeletal E-Book" Elsevier Health Sciences, 2016, p. 326.
^ Feger, Joachim. "Ulnotriquetral ligament". radiopedia.org. Retrieved September 28, 2022.

[Manaster-1] Manaster, B. J., Julia Crim "Imaging Anatomy: Musculoskeletal E-Book" Elsevier Health Sciences, 2016, p. 326.

[2] Feger, Joachim. "Ulnotriquetral ligament". radiopedia.org. Retrieved September 28, 2022.

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