Origin: The flexor digiti minimi brevis muscle arises from the hamate bone and the palmar surface of the flexor retinaculum of the hand. The flexor digiti minimi brevis originates from the base of the fifth metatarsal bone and the long plantar ligament.. Insertion. Insertion : It inserts on the anterior margins on the base of the middle phalanges of the four fingers. Collectively, they form the hypothenar eminence, which is located on the … The flexor digiti minimi brevis (also flexor digiti minimi brevis, latin: musculus flexor digiti minimi brevis) is a muscle of the lateral part of the sole of the foot that lies under the fifth metatarsal bone.. Origin. The Flexor Digiti Minimi Brevis is a hand muscle which facilitates flexion of the fifth digit of the hand which is also known by the name of pinkie finger. The abductor digiti minimi is the most variable hypothenar muscle, and might be joined by accessory slips from the tendon of the flexor carpi ulnaris, the flexor retinaculum, the fascia of the distal forearm, or the tendon of the palmaris longus. The flexor digiti minimi brevis was absent in 8 hands, had 1 belly in 24 hands, and had 2 bellies in 3 hands. Nerve Supply of the Flexor Digiti Minimi Brevis The flexor digiti minimi brevis is innervated by the deep branch of the ulnar nerve (C8 and T1). This muscle originates at the hamate bone and extends to its insertion at the fifth digit. The Flexor digiti minimi brevis (Flexor brevis minimi digiti, Flexor digiti quinti brevis) lies under the metatarsal bone on the little toe, and resembles one of the Interossei. Flexor Digiti Minimi Brevis : Occasionally, the muscle is … The abductor digiti minimi (ADM) had 1 belly in 6 hands, 2 bellies in 28 hands, and 3 bellies in 1 hand. Nerve Supply : It is supplied by median nerve. 3. - flexor brevis digiti minimi lies on volar surface of hypothenar area w/ small separation between it and the abductor of little finger; - thru this interval run the deep branches of the ulnar artery & nerve into subtendinous part of the palm of the hand; Origin: Hook of hamate and flexor retinaculum Insertion: Medial side of base of proximal phalanx of little finger Action: Flexes proximal phalanx of little (5th) finger Innervation: Deep branch of ulnar nerve (C8 and T1) Arterial Supply: Ulnar artery The opponens digiti minimi had 2 layers of origin and the deep branch of the ulnar nerve passed between these 2 layers in all hands. Opponens digiti minimi (Musculus opponens digiti minimi) Opponens digiti minimi is an intrinsic muscle of the hand.It is a part of the hypothenar muscle group, together with abductor digiti minimi and flexor digiti minimi brevis muscles.All three muscles are located in the hypothenar compartment of the hand. Insertion: Medial side of the base of proximal phalanx of the little finger. Action : It acts as flexor of fingers (primarily at proximal interphalangeal joints).

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