Flexor digitorum longus (left) (Musculus flexor digitorum longus)
Educational content only — not medical advice.
Anatomy
A deep flexor on the tibial aspect; its tendon passes behind the medial malleolus and splits under the sole to the four lateral toes, perforated by the short flexor like in the hand.
Origin & insertion
Medial posterior tibia in its middle third.
Action
Flexes the distal phalanges and grips the ground in the terminal push-off of gait.
Innervation
Tibial nerve (L5–S2).
Clinical notes
Its tendon transfer to the lateral side is standard in neuromuscular cavus foot (Charcot-Marie-Tooth), replacing the failed peroneals.
Related structures
Educational references
FAQ
What is the role of the Flexor digitorum longus (left)?
A deep flexor on the tibial aspect; its tendon passes behind the medial malleolus and splits under the sole to the four lateral toes, perforated by the short flexor like in the hand.
Why is the Flexor digitorum longus (left) clinically important?
Its tendon transfer to the lateral side is standard in neuromuscular cavus foot (Charcot-Marie-Tooth), replacing the failed peroneals.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details