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Flexor digitorum longus

Contents

Anatomy pictures

Flexor digitorum longus - posterior view
Flexor digitorum longus - foot - inferior view
Flexor digitorum longus - posteromedial view

Referred pain pattern

Flexor digitorum longus - pain pattern

Symptoms

  • Sore feet while walking
  • Cramping of toes
  • Claw toes or hammer toes

Muscular attachments

Origin of flexor digitorum longus

Insertion of flexor digitorum longus

Videos

Short version

 

Detailed version

Myofascial line

Deep ventral line

Additional Functional Muscles Supporting The Deep Ventral Line

Synergists

Toes 2-5 MTP joints - Flexion

  • Flexor Digitorum Longus
  • Flexor Digitorum Brevis
  • Flexor Digiti Minimi Pedis (5. toe)
  • Quadratus Plantae
  • Abductor Digiti Minimi Pedis (5. toe)
  • Lumbricals Pedis
  • Plantar Interossei (3.-5. toe)
  • Dorsal Interossei Pedis (2.-4. toe)

Toes 2-5 PIP joints - Flexion

Toes 2-5 DIP joints - Flexion

Antagonists

Toes 2-5 MTP joints - Extension

Toes 2-5 PIP joints - Extension

  • Extensor Digitorum Longus
  • Extensor Digitorum Brevis (2.-4. toe)
  • Lumbricals Pedis
  • Plantar Interossei (3.-5. toe)
  • Dorsal Interossei Pedis (2.-4. toe)

Toes 2-5 DIP joints - Extension

  • Extensor Digitorum Longus
  • Extensor Digitorum Brevis (2.-4. toe)
  • Lumbricals Pedis
  • Plantar Interossei (3.-5. toe)
  • Dorsal Interossei Pedis (2.-4. toe)

Anatomy

Position

  • Deep

Origin

  • Middle 1/3 of posterior part of tibia
  • Fascia covering the tibalis posterior

Insertion

  • Plantar side of distal phalanx basis 2.-5.

Main function

  • 2.-5. MTP joints
    • Flexion
  • 2.-5. PIP joints
    • Flexion
  • 2.-5. DIP joints
    • Flexion

Secondary function

  • Ankle
    • Plantar flexion
  • Tarsal joint
    • Inversion

Nerve innervation

  • Segmental
    • L5-S2
  • Peripheral
    • Nervus tibialis

Arterial supply

  • Posterior part of the tibialis artery