Dorsal Interossei of the Foot

Description

The dorsal and plantar interosseous muscles of the foot

Name

• Dorsal Interossei
• Interosseous Muscle

General

• Found in the 4th layer of intrinsic muscles of the foot

Origin

• Opposing sides of metatarsal bones 1-5

Insertion

• 1: Medial base of proximal phalanx of digit
• 2-4: Lateral bases of proximal phalanges and extensor expansion of digits 2-4

Actions

• Metatarsophalangeal joints 2-4: toe flexion, toe abduction
• Interphalangeal joints 2-4: toe extension

Innervation

• Lateral Plantar Nerve

Vascular Supply

• Arcuate artery
• Dorsal and plantar metatarsal arteries

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Clinical Significance

• Needs to be updated

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See Also

• Foot And Ankle Anatomy
• Foot Pain (Main)
• Physical Exam Foot

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