Which muscles constitute the main everters of the foot?

Which muscles constitute the main everters of the foot?

• A. Tibialis anterior
• B. Fibularis tertius
• C. Fibularis longus
• D. Fibularis longus and fibularis brevis

Answer: (D)

Turning the sole of the foot outward (eversion) is mainly produced by the fibularis (peroneal) muscles on the lateral leg. The primary players are the fibularis longus and fibularis brevis. Their tendons pull the foot sideways, opposing the inward pull of the tibialis muscles. Longus also supports the arches as its tendon runs under the foot, which helps stabilize the foot during walking. Brevis attaches to the base of the 5th metatarsal and provides strong eversion at the midfoot. Fibularis tertius can assist in eversion, but it’s a smaller contributor and is more known for helping with dorsiflexion. The tibialis anterior and tibialis posterior are mainly responsible for inversion, not eversion. So the two primary everters are fibularis longus and fibularis brevis.

Turning the sole of the foot outward (eversion) is mainly produced by the fibularis (peroneal) muscles on the lateral leg. The primary players are the fibularis longus and fibularis brevis. Their tendons pull the foot sideways, opposing the inward pull of the tibialis muscles. Longus also supports the arches as its tendon runs under the foot, which helps stabilize the foot during walking. Brevis attaches to the base of the 5th metatarsal and provides strong eversion at the midfoot.

Fibularis tertius can assist in eversion, but it’s a smaller contributor and is more known for helping with dorsiflexion. The tibialis anterior and tibialis posterior are mainly responsible for inversion, not eversion. So the two primary everters are fibularis longus and fibularis brevis.