The fibularis longus is a muscle located in the lateral compartment of the leg. This muscle is the larger of the two muscles in this compartment, the other being the fibularis brevis. This muscle is also superficially located, meaning it is found close to the surface of the skin.
The fibularis longus originates from the superior and lateral surface of the fibula, as well as from the lateral tibial condyle. These fibres come together as one tendon, which runs down the posterior side of the lateral malleolus and crosses under the foot. Finally, the tendon attaches to the bones on the medial side of the foot, such as the medial cuneiform and the base of the first metatarsal.
The fibularis longus is responsible for two primary actions. The first is eversion, which is when the foot is turned outward. The second is plantarflexion, which is when the toes are pointed away from the ground. This muscle also helps to support the lateral and transverse arches of the foot.
The fibularis longus is innervated by the superficial fibular nerve, or the peroneal nerve.
Blood supply to this muscle is provided by the fibular artery.
Injuries to the fibularis longus can be quite painful and can result in decreased strength and range of motion. Injuries to this muscle are typically caused by overuse, such as during intense physical activities like running or other sports. Symptoms of an injury to the fibularis longus can include pain, swelling, and difficulty moving the foot, as well as reduced strength and range of motion. Treatment for an injury to the fibularis longus usually includes rest, ice, and physical therapy. In more serious cases, surgery may be necessary.
The fibularis longus is a muscle located in the lateral compartment of the leg. It originates from the superior and lateral surface of the fibula, as well as from the lateral tibial condyle. This muscle is responsible for eversion and plantarflexion of the foot, as well as the support of the lateral and transverse arches of the foot. It is innervated by the superficial fibular nerve and is supplied with blood by the fibular artery. Injury to the fibularis longus can occur due to overuse and can cause pain, swelling, and decreased strength and range of motion. Treatment for this injury usually includes rest, ice, and physical therapy.
