Opponens digiti minimi of foot

The opponens digiti minimi (Latin: musculus opponens digiti minimi) is a small and short plantar muscle of the foot located in the lateral compartment. It stretches along the lateral side of the fifth metatarsal bone. The opponens digiti minimi is often considered a portion of the flexor digiti minimi brevis muscle instead of a distinct muscle.

Origin

The opponens digiti minimi of the foot originates from the base of the fifth metatarsal bone and the long plantar ligament.

Insertion

The opponens digiti minimi of the foot inserts on the lateral surface of the fifth metatarsal bone.

Action

The opponens digiti minimi of the foot provides opposition of the little toe at the fifth metatarsophalangeal joint.

Innervation

The opponens digiti minimi muscle of the foot is innervated by the lateral plantar nerve (S2 - S3) - one of the terminal branches of the tibial nerve.

Blood supply

The opponens digiti minimi muscle of the foot receives arterial blood supply from the branches of the lateral plantar artery that arises from the posterior tibial artery.