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The proximal row consists of the scaphoid, lunate, triquetrum and pisiform. These bones are closely approximated to the distal radius, with the scaphoid located most radially. The distal row consists of the hamate, capitate, trapezoid and trapezium. There are eight small carpal bones in the wrist that are firmly bound in two rows of four bones each. The mass that results from these bones is called the carpus. The carpus is rounded on its proximal end, where it articulates with the ulna and radius at the wrist.