Abductor digiti minimi muscle of hand in three slips that are inserted into the ulnopalmar margin of the proximal phalanx, the palmar plate of the metacarpophalangeal joint, and the sesamoid bone when present. Some fibers insert into the finger's dorsal aponeurosis, which is why the muscle acts similar to a dorsal interosseus muscle. Additionally, the ulnar-most portion of the tendon inserts into the little finger's digital cord, and the muscle thus forms part of a structure that flexes the metacarpophalangeal joint and extends the interphalangeal joints. It is innervated by the deep branch of the ulnar nerve (C8–T1). The abductor digit minimi develops at an early
Bertram A. Bone floating reserve force, and Bone did not see combat. Colonel Bone was appointed officer in Charge of the Ordnance Section, Service Command Fleet Marine Force, Pacific under Major General Earl C. Long. In this capacity, Bone was co-responsible for the supply, salvage, evacuation, construction, personnel management, quartering and sanitation needs of all FMFPac units and other marine units in its area. He was ordered back to the States in May 1946 and following the brief leave home, he was appointed commanding officer of the Recruit Depot within Marine Corps Base San Diego under Major General Leo D. Hermle. In this