| Triquetral bone | |
|---|---|
_01_palmar_view.png) 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.