Wednesday, January 24, 2007 

Neck pain|elbow pain| hand pain|extensor digitorum  

Neck pain due to C7 nerve root irritation will cause pain and spasm in the extensor digitorum and the other muscles on the back of the forearm causing elbow pain and hand pain also.  The posterior interosseous nerve carries the C7 nerve root fibers to these muscles. 

This muscle arises from the lower most portion of the arm bone (humerus) known as the lateral epicondyle.  It inserts into the back of all the finger tips (distal phalanges) except for the thumb. 

It acts to straighten the fingers (extension) and also helps in picking up the wrist (dorsiflexion).

Categories: Upper Body Topics