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Flexes big toe at all joints; weakly plantarflexes ankle; supports medial longitudinal arch of foot Tibialis posterior muscle: Interosseous membrane; posterior surface of tibia inferior to soleal line; posterior surface of fibula
The flexor digitorum longus runs along the medial posterior side of the lower leg and aids in flexions of the toes (apart from the big toe). The flexor digitorum longus muscle arises from the posterior surface of the body of the tibia, from immediately below the soleal line to within 7 or 8 cm of its lower extremity, medial to the tibial origin of the tibialis posterior muscle.
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.
Inserts on the dorsal side of the base of the distal phalanx of the big toe: Artery: Anterior tibial artery: Nerve: Deep fibular nerve, L5 (L4-S1) Actions: Extends (raises) the big toe and assists in dorsiflexion of the foot at the ankle. Also is a weak evertor/invertor: Antagonist: Flexor hallucis longus, flexor hallucis brevis: Identifiers; Latin
Lumboinguinal nerve (green) and Ilioinguinal nerve (purple). In modern texts, these two regions are often considered to be innervated by the genitofemoral nerve. Medial cluneal nerves (pink) - labeled as "post. division of sacral" Inferior cluneal nerves (pink region, not designated with its own section)
Medial Head: Medial sesamoid bone of the metatarsophalangeal joint, proximal phalanx of great toe. Lateral head: Lateral sesamoid bone of the metatarsophalangeal joint, proximal phalanx of great toe: Nerve: Medial plantar nerve: Actions: Flex hallux: Antagonist: Extensor hallucis longus muscle: Identifiers; Latin: musculus flexor hallucis ...
The extensor hallucis brevis is essentially the medial part of the extensor digitorum brevis muscle. Some anatomists have debated whether these two muscles are distinct entities.
The superficial fibular nerve (also known as superficial peroneal nerve) is a mixed (motor and sensory) nerve that provides motor innervation to the fibularis longus and fibularis brevis muscles, and sensory innervation to skin over the antero-lateral aspect of the leg along with the greater part of the dorsum of the foot (with the exception of the first web space, which is innervated by the ...