It helps in moving the foot
In human anatomy, the fibularis longus (also known as peroneus longus) is a superficial muscle in the lateral compartment of the leg, and acts to evert and plantar flex the ankle.
The Fibularis (Peroneus) Longus, Fibularis (Peroneus) Brevis, and Fibularis (Peroneus) Tertius.
The peroneus longus and peroneus brevis muscles are synergists for eversion of the foot. They work together to assist in turning the foot outward.
Peroneus (fibularis) longus muscle and Peroneus (fibularis) brevis muscle
Peroneus longus and Peroneus brevis tendons
Peroneus Brevis Tendon (Laterally) Peroneus Tertius Tendon (Dorsally)
It seems like there might be a typo in your question. If you are referring to "peroneus," it is a group of muscles located in the lower leg that help with ankle movement and stability. There are three peroneus muscles: peroneus longus, peroneus brevis, and peroneus tertius. These muscles play a crucial role in maintaining balance and supporting the foot and ankle during various activities.
Peroneus (fibularis) longus muscle and Peroneus (fibularis) brevis muscle
peroneus brevis
Base of the 5th Metatarsal
The peroneus is also called the fibularis longus and is found in the human leg. It is a superficial muscle found in the lateral compartment of the leg and assists with flexing the ankle.
Dorsiflexion of the foot uses four muscles. These are the tibialis anterior, extensor digitorum longus, extensor hallucis longus, and the peroneus tertius. The prime mover is the tibialis anterior.