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Dog · Muscle · Thoracic limb

Common digital extensor

Musculus extensor digitorum communis

Extends the digits and the carpus.

System
Muscle
Region
Thoracic limb
Sides
Paired: left and right

Where it runs from and to

A muscle is told apart from its neighbours by what it takes hold of at each end, which is also what decides what it does when it shortens.

Origin
Humerus, at its lateral epicondyle.
Insertion
Divides into four tendons ending on the extensor processes of the distal phalanges, digits II to V.
Action
Extends the digits and the carpus.
Nerve
Radial nerve.

Written for Vetomica in its own words from the standard reference anatomy of the dog; the books it was checked against are listed below.

What it works on

Between extensor carpi radialis and lateral digital extensor.

Bones it takes hold of

Muscles and ligaments it works with

  • Extensor carpi radialis
  • Lateral digital extensor
  • Extensor digiti 1 et 2
  • Abductor digiti 1 longus
  • Supinator
  • Common digital extensor tendons
  • Extensor retinaculum of carpus

Terminology

English
Common digital extensor
Latin (NAV)
Musculus extensor digitorum communis
Status
A valid term in the Nomina Anatomica Veterinaria

References

Where to read this structure in full, and where the named parts above were read.

  • NAV 2017Myologia: musculi membri thoracici
  • Miller's Anatomy of the Dog, 5th ed.The Muscular System: muscles of the thoracic limb
  • König & LiebichMuscles of the thoracic limb
  • Dyce, Sack & WensingThe forelimb of the carnivores