Fibularis brevis
Fibularis brevis
Fibularis brevis (pronunciation: fi-bu-lar-is bre-vis), also known as the peroneus brevis, is a muscle of the lower leg that aids in eversion and plantarflexion of the foot.
Etymology
The term "fibularis" is derived from the Latin word "fibula", which means "clasp" or "buckle", referring to the bone where this muscle is located. The term "brevis" is a Latin word that means "short", indicating the relative size of this muscle compared to the nearby fibularis longus.
Anatomy
The fibularis brevis is located in the lateral compartment of the leg, deep to the fibularis longus. It originates from the lower two-thirds of the fibula and inserts into the base of the fifth metatarsal bone of the foot.
Function
The primary function of the fibularis brevis is to evert the foot, turning the sole of the foot outward. It also assists in plantarflexion, which is the action of pointing the toes downward.
Related Terms
- Fibularis longus: A muscle located in the lateral compartment of the leg, superficial to the fibularis brevis.
- Fibula: The smaller of the two bones in the lower leg, where the fibularis brevis originates.
- Eversion: The action of turning the sole of the foot outward, a movement aided by the fibularis brevis.
- Plantarflexion: The action of pointing the toes downward, a movement assisted by the fibularis brevis.
External links
- Medical encyclopedia article on Fibularis brevis
- Wikipedia's article - Fibularis brevis
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