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The flexor hallucis longus is situated on the fibular side of the leg. It arises from the inferior two-thirds of the posterior surface of the body of the fibula, with the exception of 2.5 cm at its lowest part; from the lower part of the interosseous membrane; from an intermuscular septum between it and the peroneus muscles, laterally, and from the fascia covering the tibialis posterior, medially.
The tarsal tunnel is delineated by bone on the inside and the flexor retinaculum on the outside. People with TTS typically complain of numbness in the foot radiating to the big toe and the first three toes, pain , burning, electrical sensations, and tingling over the base of the foot and the heel. [ 1 ]
The tibial nerve, posterior tibial artery, posterior tibial vein, and flexor tendons travel in a bundle along this pathway through the tarsal tunnel, in the following order from anteromedial to posterolateral: Tibialis posterior tendon. [2] Flexor digitorum longus tendon. [2] Posterior tibial artery. [2] Posterior tibial vein. [1] Tibial nerve. [2]
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 muscular branches supply muscles on the medial side of the sole, including the abductor hallucis, the flexor digitorum brevis, the flexor hallucis brevis, and the first lumbrical; those for the abductor hallucis and flexor digitorum brevis arise from the trunk of the nerve near its origin and enter the deep surfaces of the muscles; the branch of the flexor hallucis brevis springs from the ...
Main Action Tibialis anterior: Lateral condyle and superior half of lateral surface of tibia and interosseous membrane: Medial and inferior surfaces of medial cuneiform and base of 1st metatarsal: Deep fibular (peroneal) nerve (L4, L5) Dorsiflexes ankle and inverts foot Extensor hallucis longus
Main Action Fibularis longus: Head and superior two thirds of lateral surface of fibula: Base of 1st metatarsal and medial cuneiform: Superficial fibular nerve (L5, S1, S2) Everts foot and weakly plantarflexes ankle Fibularis brevis: Inferior two thirds of lateral surface of fibula: Dorsal surface of tuberosity on lateral side of base of 5th ...
The flexor hallucis longus arises distally on the fibula and on the interosseus membrane from where its relatively thick muscle belly extends far distally. Its tendon extends beneath the flexor retinaculum to the sole of the foot and finally attaches on the base of the last phalanx of the hallux.