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Flexor digitorum brevis: anatomy, location and function

A central muscle of the sole. Flexes the lateral four toes at the proximal interphalangeal joints.

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Highlighted in the model: Flexor digitorum brevis. Click any part to read about it, or switch off “Highlight topic” to see the whole body. 3D data: BodyParts3D, © The Database Center for Life Science, CC BY 4.0; meshes simplified and recoloured. The model is an adult male.

Flexor digitorum brevis at a glance

What it is
A central muscle of the sole.
Location
Origin: medial process of the calcaneal tuberosity and plantar aponeurosis. Insertion: sides of the middle phalanges of toes 2–5.
Function
Flexes the lateral four toes at the proximal interphalangeal joints.
Body system
Muscular · paired (left and right)
FMA ID
FMA37461 (Foundational Model of Anatomy)

Key facts

  • Innervation: medial plantar nerve
  • Its tendons split to let the long flexor tendons pass

Structures next to the flexor digitorum brevis

The nearest named structures in the 3D model, measured from the centre of each part:

References

  1. Foundational Model of Anatomy: Flexor digitorum brevis (FMA37461). EMBL-EBI Ontology Lookup Service.
  2. OpenStax. Anatomy and Physiology 2e, §11.2 Naming Skeletal Muscles. Rice University, 2022.
  3. Mitsuhashi N. et al. (2009). BodyParts3D: 3D structure database for anatomical concepts. Nucleic Acids Research 37, D782–D785. Data © The Database Center for Life Science, CC BY 4.0.

Related anatomy

Explore the whole body in the interactive 3D human anatomy model, or browse the A–Z list of human structures.