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The fibularis brevis (bottom-most label) is a muscle of the lower leg and aids in plantar flexion and eversion of the foot. The fibularis brevis arises from the lower two-thirds of the lateral, or outward, surface of the fibula (inward in relation to the fibularis longus) and from the connective tissue between it and the muscles on the front and back of the leg.
The fibularis tertius is supplied by the deep fibular nerve. [ 2 ] [ 3 ] In rare cases, it may also be supplied by the common fibular nerve . [ 2 ] This is unlike the other fibularis muscles , which are located in the lateral compartment of the leg and are supplied by the superficial fibular nerve , since the fibularis tertius is found in the ...
The fibularis tertius is located in the anterior compartment of the leg and is supplied by the anterior tibial artery and the deep fibular nerve. While all three muscles move the sole of the foot outward, away from the midline of the body , the longus and brevis extend the foot downward away from the body (plantar flexion), whereas the tertius ...
Extensor hallucis longus; Extensor digitorum longus; Peroneus tertius; Deep fibular (peroneal) nerve and anterior tibial vessels: Lateral compartment: Fibularis longus; Fibularis brevis; Superficial fibular (peroneal) nerve and fibular artery: Deep posterior compartment: Tibialis posterior; Flexor hallucis longus; Flexor digitorum longus; Popliteus
The fibularis longus, together with the fibularis brevis and the tibialis posterior, extend the foot downward away from the body at the ankle (plantar flexion). It opposes the tibialis anterior and the fibularis tertius, which pull the foot upward toward the body (dorsiflexion). [2]
Extensor digitorum longus: Lateral condyle of tibia and superior three quarters of medial surface of fibula and interosseous membrane: Middle and distal phalanges of lateral four digits: Extends lateral four digits and dorsiflexes ankle Fibularis tertius: Inferior third of anterior surface of fibula and interosseous membrane: Dorsum of base of ...
The superior extensor retinaculum binds down the tendons of extensor digitorum longus, extensor hallucis longus, peroneus tertius, and tibialis anterior as they descend on the front of the tibia and fibula; under it are found also the anterior tibial vessels and deep peroneal nerve. [1]
The fibularis (peroneus) longus and fibularis (peroneus) brevis both have their origins on the fibula, and they both pass behind the lateral malleolus where their tendons pass under the fibular retinacula. Under the foot, the fibularis longus stretches from the lateral to the medial side in a groove, thus bracing the transverse arch of the foot ...