Fibularis muscles

Fibularis Muscles

The fibularis muscles, also known as the peroneal muscles, are a group of muscles in the leg.

The Fibularis muscles (also known as the peroneal muscles) are a group of muscles in the human leg. They consist of the Fibularis longus, Fibularis brevis, and Fibularis tertius muscles. These muscles are primarily responsible for eversion and plantar flexion of the foot.

Anatomy

The fibularis muscles are located on the lateral side of the leg and are primarily responsible for eversion and plantar flexion of the foot. They are innervated by the superficial fibular nerve.

Fibularis Longus

The fibularis longus originates from the upper part of the fibula.

The fibularis longus originates from the upper part of the fibula and inserts into the medial cuneiform and first metatarsal on the underside of the foot. It is the most superficial of the three fibularis muscles.

Fibularis Brevis

The fibularis brevis is located underneath the fibularis longus.

The fibularis brevis is located underneath the fibularis longus. It originates from the lower two-thirds of the fibula and inserts into the base of the fifth metatarsal.

Fibularis Tertius

The fibularis tertius is the smallest of the three fibularis muscles.

The fibularis tertius is the smallest of the three fibularis muscles. It originates from the lower third of the fibula and the interosseous membrane and inserts into the base of the fifth metatarsal.

Function

The fibularis muscles are primarily responsible for eversion and plantar flexion of the foot. They also assist in stabilizing the ankle during walking and running.

Clinical Significance

Damage to the fibularis muscles or their innervating nerve can result in foot drop, a condition characterized by the inability to lift the front part of the foot.

See Also

• Anatomy of the lower limb
• Muscles of the lower limb
• Superficial fibular nerve