Peroneus tertius

The peroneus tertius (/ˌfɪbjᵿˈlɛərᵻs ˈtɛrʃi.əs/) (also known as fibularis tertius) is a muscle of the human body located in the lower limb. The muscle arises from the lower third of the anterior surface of the fibula (anterior compartment of lower leg); from the lower part of the interosseous membrane; and from an intermuscular septum between it and the peroneus brevis muscle. The septum is sometimes called the intermuscular septum of Otto. Its action is that of weak dorsiflexion of the ankle joint and to evert the foot at the ankle joint.

Peroneus tertius

The peroneus tertius (/ˌfɪbjᵿˈlɛərᵻs ˈtɛrʃi.əs/) (also known as fibularis tertius) is a muscle of the human body located in the lower limb. The muscle arises from the lower third of the anterior surface of the fibula (anterior compartment of lower leg); from the lower part of the interosseous membrane; and from an intermuscular septum between it and the peroneus brevis muscle. The septum is sometimes called the intermuscular septum of Otto. Its action is that of weak dorsiflexion of the ankle joint and to evert the foot at the ankle joint.