Fibularis (Peroneus) Brevis

The fibularis brevis is a muscle in the lateral compartment of the leg. It is located deep to the fibularis longus.

• Attachments:
  • Originates from the inferolateral surface of the fibular shaft. The muscle belly forms a tendon, which descends with the fibularis longus into the foot.
  • It travels posteriorly to the lateral malleolus, passing over the calcaneus and the cuboidal bones.
  • The tendon then attaches to a tubercle on the 5th metatarsal.
• Actions: Eversion of the foot.
• Innervation: Superficial fibular (peroneal) nerve.
• Blood supply: Fibular artery.

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Fig 1
Fibularis brevis muscle of the lateral leg.