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Muscles / Lower legs

Quadratus plantae

Also called flexor accessorius.

Anatomy

Origin
Medial surface and lateral margin of the plantar calcaneus
Insertion
Posterolateral margin of the flexor digitorum longus tendon
Nerve
Lateral plantar nerve (S2-S3)

Actions

  • Assists FDL in flexing toes 2-5 by straightening its oblique pull

Also trained by

References (4)
  1. Standring S, ed. Elsevier. Gray's Anatomy: The Anatomical Basis of Clinical Practice. 42nd ed.
  2. Dalley AF, Agur AMR. Wolters Kluwer. Moore's Clinically Oriented Anatomy. 9th ed.
  3. Neumann DA. Elsevier. Kinesiology of the Musculoskeletal System: Foundations for Rehabilitation. 3rd ed.
  4. Betts JG, Young KA, Wise JA, et al. OpenStax (free, openly licensed textbook). Anatomy and Physiology 2e