Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025
Definition
The triquetrum is one of the eight small carpal bones located in the wrist, specifically on the ulnar side where it articulates with the pisiform, lunate, and hamate bones. It plays a crucial role in the complex movements and stability of the wrist.
Related terms
Carpal bones: These are the eight small bones that make up the wrist joint, allowing for its complex movements.
Lunate bone: This is one of the carpal bones that articulates with the triquetrum, contributing to wrist flexibility and motion.
Ulnar articulation: This refers to the joint interaction between the ulna (one of the two long bones in the forearm) and any adjacent carpal bones, including the triquetrum, which helps stabilize the ulnar side of the wrist