Flexor digiti minimi brevis muscle of foot

Musculus flexor digiti minimi brevis (foot)

Flexor digiti minimi brevis muscle of the foot is a muscle located in the foot, specifically involved in the movement of the little toe. Its primary function is to flex the fifth (little) toe, aiding in the movement and stability of the foot. This muscle is part of the lateral plantar muscles group and plays a crucial role in the mechanics of the foot, especially during walking and running.

Anatomy

The Flexor digiti minimi brevis muscle of the foot originates from the base of the fifth metatarsal bone on the plantar surface and inserts into the lateral side of the base of the proximal phalanx of the fifth toe. It lies beneath the plantar fascia and is innervated by the lateral plantar nerve, a branch of the tibial nerve. Its blood supply comes from the plantar arterial network.

Function

The primary function of the Flexor digiti minimi brevis muscle is to flex the fifth toe at the metatarsophalangeal joint. This action is essential for providing stability and support to the lateral side of the foot during the push-off phase of gait, contributing to efficient locomotion.

Clinical Significance

Injuries or conditions affecting the Flexor digiti minimi brevis can lead to discomfort or dysfunction in the foot, impacting gait and mobility. Conditions such as plantar fasciitis or nerve entrapment may indirectly affect the function of this muscle. Treatment options vary depending on the underlying cause but may include physical therapy, orthotics, or, in severe cases, surgery.

See Also

• Muscles of the lower limb
• Foot anatomy
• Plantar fasciitis
• Gait (human)