extensor hallucis longus


Also found in: Acronyms.

extensor hallucis longus

a muscle that extends the great toe and dorsiflexes the foot at the ankle joint.

extensor hallucis longus

; EHL extrinsic foot muscle lying within anterior muscle compartment of lower leg
  • origin from middle 2/4 of medial surface of fibula, medial to extensor digitorum longus, tendon passes down lower leg lateral to anterior border of tibia but medial to tendon of extensor digitorum longus

  • insertion tendon passes into dorsum of foot deep to extensor and distal retinacula, lying at dorsomedial aspect of foot to form a dorsal expansion, the central part of which passes to distal phalanx of hallux; lateral part of dorsal expansion passes to deep transverse metatarsal ligament and the medial part of expansion joins tendon of abductor hallucis

  • nerve supply deep peroneal nerve

  • action extension of phalanges of hallux and dorsiflexion of ankle joint; acts as an auxiliary invertor of foot when hallux is extended at the first metatarsophalangeal joint

References in periodicals archive ?
Dorsiflexion of foot is accomplished by the tibialis anterior, extensor digitorum longus and brevis, and extensor hallucis longus and brevis muscles, which are innervated by the deep peroneal nerve.
He had a power of 2/5 in iliopsoas, 3/5 in extensor hallucis longus and 0/5 in ankle plantar flexors on both sides.
The modifications at the point of insertion of Tibialis Posterior (first slip passed through the extensor hallucis longus and second slip through extensor digitorum longus with the peroneus tertius tendon (10) and sutured to it and the underlying periosteum) may have also contributed.
Tuberculous tenosynovitis of anterior tibial and extensor hallucis longus tendon: case report.
The nerves to the extensor digitorum longus and extensor hallucis longus also could not be separated because of interfascicular plexusing.
All the nerves/vessels can be approached with an in-plane needle-transducer orientation; however, the deep peroneal nerve is approached out-of-plane to facilitate needle passage lateral to the extensor hallucis longus tendon to reach the anterior tibial artery/deep peroneal nerve.
Tenosynovitis is more common than tears in the anterior tendons, including the extensor digitorum longus (EDL) (Figure 15) and the extensor hallucis longus (EHL) tendons.
Electromyography showed fibrillation potentials and positive sharp waves (denervation potentials) without any voluntary activity in tibialis anterior, extensor hallucis longus, peroneus longus, medial head of gastrocnemius, and short head of biceps femoris on the right side.
The anterior compartment has 4 muscles: the extensor digitorum longus, extensor hallucis longus, peroneus tertius and tibialis anterior.
As the phalanx becomes misaligned, the abductor hallucis can contribute to pronation while the extensor hallucis longus becomes an adducting force on the phalanx, promoting progression of the deformity (Fig.
The deep peroneal nerve runs in the anterior compartment and innervates the tibialis anterior, extensor hallucis longus, extensor digitorum longus, and peroneus tertius.
El presente trabajo esta referido al estudio de la presencia del Extensor Hallucis Capsularis (EHC), llamado tambien ligamento capsularis o tendon accesorio del Musculo Extensor Hallucis Longus (EHL), el cual no esta siempre presente segun los estudios anteriormente realizados.

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