Pisiform bone Pisiform bone The pisiform bone ( or ), also spelled pisiforme (from the Latin "pisifomis", pea-shaped), is a small knobbly, sesamoid bone that is found in the wrist. It forms the ulnar border of the carpal tunnel. The pisiform is a sesamoid bone, with no covering membrane of periosteum. It is the last carpal bone to ossify. The pisiform bone is a small bone found in the proximal row of the wrist (carpus). It is situated where the ulna joins the wrist, within the tendon of the flexor carpi ulnaris muscle. It only has one side that acts as a
Bertram A. Bone Atoll, Wake Island, Johnston Atoll and Palmyra Atoll. Bone was meanwhile promoted to the rank of lieutenant colonel in May 1939. In November 1939, the 1st Defense Battalion was activated in San Diego with Bone as its commanding officer. As experienced artillery officer, Bone supervised the formation and initial training. His battalion consisted of the batteries with 5"/51 caliber guns, searchlight and aircraft sound locator and antiaircraft groups with M2 Browning and M1917 Browning machine guns and were ideal for the defense of the islands from the attack from the sea and air. At the beginning of March 1940, 2nd