An analysis of two theropod dinosaur fossils has shown that they had a type of carpal bone (pisiform) in their wrists—a bone considered important to flight in birds. This discovery by a team of ...

Ligaments are typically bands of fibrous tissue that connect one bone to another. The pisohamate ligament is part of the structure of the hand, where it connects the pisiform bone to the hook of the ...

New Haven, Conn. — The evolutionary path from dinosaurs to birds included the development of a tiny wrist bone that ultimately proved crucial for stabilizing wings in flight. A new study suggests that ...

IN a recent letter in Nature, Prof. Harris 1 gave radiological evidence for the appearance of a separate epiphysial centre in the pisiform bone of sub-human primates. In view of the considerable ...

THE pisiform bone is often dismissed by the human anatomist as an insignificant sesamoid bone in the tendon of the flexor carpi ulnaris muscle, notwithstanding its articulation with the os triquetrum ...