flexor digitorum longus


Also found in: Acronyms.

flexor digitorum longus

the muscle that flexes the lateral four toes. It is involved with gripping the ground during walking and propelling the body forward off the toes at the end of the stance phase of gait. It is innervated by the tibial nerve.

flexor digitorum longus

; FDL extrinsic foot muscle, within deep compartment of lower-leg posterior muscle group
  • origin from medial part of posterior surface of tibia distal to soleal line

  • insertion tendon passes down posterior aspect of tibia, grooving medial posterior inferior margin of tibia (medial malleolus) and passing (deep to flexor retinaculum) into third layer of sole of foot, dividing into four tendons, each of which inserts into the plantar aspect of the terminal phalanx of a lesser toe

  • nerve supply tibial nerve

  • action flexion of metatarsophalangeal and interphalangeal joints of lesser toes; assists plantarflexion of ankle and foot inversion

References in periodicals archive ?
Flexor digitorum longus in turn acts earlier and longer in an attempt to stabilise the forefoot (Travell and Simon, 1983).
Magnetic resonance imaging of the left arm showed soft tissue edema of the olecranon bursa and the left fourth flexor digitorum longus tendon, and no osteomyelitis.
Attachments of the soleus, posterior tibialis, and the flexor digitorum longus muscle are located in the posterior side of the tibia.
Recently, intrasynovial donor tendons have been harvested from the flexor digitorum longus tendons of the foot in humans [16].

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