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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 posterior tibial artery, tibial nerve, and tendons of the tibialis posterior, flexor digitorum longus, and flexor hallucis longus muscles travel in a bundle through the tarsal tunnel. Inside the tunnel, the nerve splits into three segments.
If the quality of tissues is poor, such as from a neglected injury, a reinforcement mesh is an option. These meshes can be of collagen, Artelon or other degradable material. In the case of both poor tissue and significant loss of the Achilles tendon, the flexor hallucis longus tendon can be used.
Flexor hallucis longus muscle: Inferior two-thirds of posterior surface of fibula; inferior part of interosseous membrane: Base of distal phalanx of big toe (hallux)
Extensor hallucis longus: Middle part of anterior surface of fibula and interosseous membrane: Dorsal aspect of base of distal phalanx of great toe (hallux) Extends great toe and dorsiflexes ankle Extensor digitorum longus: Lateral condyle of tibia and superior three quarters of medial surface of fibula and interosseous membrane
The prolonged immobilization produced unwanted side effects — muscle atrophy, stiffness and scar tissue, all of which hindered an athlete’s recovery rate and ability to regain his or her prior ...
Enumerated from the medial side, the four canals which it forms transmit the tendons of the tibialis posterior and flexor digitorum longus muscles; the posterior tibial artery and tibial nerve, which run through a broad space beneath the ligament; and lastly, in a canal formed partly by the talus, the tendon of the flexor hallucis longus.
Tendon transfers provide a substitute which can be permanent or temporary, when muscle function is lost either due to nerve injuries or injuries to the muscle/tendon unit. Tendon transfers are also performed to correct the imbalanced muscle tone due to spasticity resulting from injuries to the central nervous system. [citation needed]