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Triquetral Bone (Triquetrum)

Medically reviewed by: Stephanie Curreli, MD, PhD
Last Updated: Jun 24, 2015

The triquetral bone (triquetrum) is one of the eight small carpal bones in the carpus that are firmly bound in two rows of four bones each. It is part of the upper end of the wrist, where it connects with the ligaments and the lower arm bones.