Flexor hallucis muscle

Flexor Hallucis Longus Muscle

File:Flexor hallucis longus muscle.png

Flexor hallucis longus muscle

The Flexor Hallucis Longus Muscle is a muscle located in the lower leg that is involved in the flexion of the big toe. It is one of the three deep muscles of the posterior compartment of the leg, along with the Tibialis posterior and the Flexor digitorum longus.

Anatomy

The Flexor Hallucis Longus originates from the lower two-thirds of the posterior surface of the fibula and the adjacent interosseous membrane. It inserts into the base of the distal phalanx of the big toe. The muscle is innervated by the tibial nerve.

Function

The primary function of the Flexor Hallucis Longus is to flex the big toe. It also assists in plantar flexion and inversion of the foot.

Clinical Significance

Due to its role in toe flexion, the Flexor Hallucis Longus is often involved in conditions such as hallux rigidus and hallux valgus. It may also be involved in conditions affecting the foot and ankle, such as plantar fasciitis.

See Also

• Muscles of the lower limb
• Flexor digitorum longus muscle
• Tibialis posterior muscle

References

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