Wednesday, February 28, 2007 

neck pain| nerve levels| C6 

Sensation: Outer aspect of the forearm supplied by the musculocutaneous nerve. 

Muscles: The following muscles have C5 and C6 nerve root innervation but most of them may have stronger C6 nerve root innervation in some individuals.  The muscles in the forearm such as the extensor carpi radialis brevis and the pronator teres are C7 nerve root dominant. 

The clinical and dissection anatomy photographs of the muscles supplied by the C5 and C6 nerve roots listed below can be located in the book index as well is in previous posts under upper body topics. 

C6 is the most commonly injured nerve root since most of the cervical mobility occurs primarily at C5-C6 level.

 -          supraspinatus (C5, C6)

-          infraspinatus (C5, C6)

-          deltoid (C5, C6)

-          teres major (C5, C6)

-          biceps (C5, C6)

-          brachialis (C5, C6)

-          coracobrachialis (C5, C6)

-          brachioradialis (C5, C6)

-          extensor carpi radialis longus (C5, C6)

-          extensor carpi radialis brevis (C6, C7)

-      supinator (C6, C7)

-          pronator teres (C6, C7)  

Reflex: Brachioradialis 

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Categories: Upper Body Topics