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Flexor Digitorum Longus


Origin :

  • Posterior surface of tibia distal to popliteal line.

Insertion :

  • Splits into four slips after passing through medial intermuscular septum of plantar surface of foot.
  • these slips then insert on plantar surface of bases of 2nd – 5th distal phalanges.

Innervation :

  • Tibial nerve (S2, S3).

Arterial Supply :

  • Muscular branch of posterior tibial artery.

Depth :

  • Superficial


Action :

  • Flexes toes 2 – 5; also helps in plantar flexion of ankle.