Extensor digitorum muscle
（重定向自Extensor digitorum communis muscle）
![](/Images/godic/202501/12/Extensor_digitorum_muscle4341.png")
![](/Images/godic/202501/12/Gray4224342.png")
![](/Images/godic/202501/12/Gray4164342.png")
![](/Images/godic/202501/12/Gray417_color4342.PNG")
The extensor digitorum muscle (also known as extensor digitorum communis) is a muscle of the posterior forearm present in humans and other animals. It extends the medial four digits of the hand.