Fibularis tertius

Fibularis tertius (also known as peroneus tertius) is a muscle in the lower leg that aids in the movement of the foot. It is considered part of the anterior compartment of the leg.

Anatomy

The fibularis tertius originates from the lower third of the anterior surface of the fibula and the adjacent interosseous membrane. It inserts into the dorsal surface of the base of the fifth metatarsal bone.

Function

The fibularis tertius assists in dorsiflexion and eversion of the foot.

Clinical significance

Injury to the fibularis tertius can result in foot drop, a condition where the individual has difficulty lifting the front part of the foot.

See also

• Fibularis muscles
• Foot drop
• Anterior compartment of leg

References

Fibularis tertius Resources
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