The triquetrous bone, also known as the triquetrum bone, is an important structure found in the human wrist. This small carpal bone is situated on the outer side of the wrist, next to the ulna and the pisiform bone. While it is commonly referred to as the triquetrous bone, it can also be called the triangular bone due to its triangular shape. Another synonym for the triquetrous bone is the triquetral bone. This bone plays a vital role in the movement and stability of the wrist joint, acting as a link between the forearm and hand bones. Understanding the various names for this bone can enhance anatomical comprehension and facilitate communication within the medical field.