09/15/2026
Numbness, tingling, or weakness in your arm or hand? The root cause might actually be coming from your neck!
Your cervical spine houses the nerve roots that control sensation and muscle strength all the way down to your fingertips. When a nerve root gets compressed or irritated, it follows a specific dermatome and myotome pattern.
Here’s a quick breakdown of cervical nerve root functions:
* C5: Biceps strength & shoulder sensation
* C6: Biceps/wrist extensions & sensation to the thumb and radial side of the hand
* C7: Triceps strength & sensation extending to the middle and index fingers
* C8: Hand grip strength & sensation to the ring and little finger
* T1: Inner side of the forearm/hand and intrinsic hand muscle control
Understanding these nerve root pathways helps pinpoint the exact level of nerve irritation in the neck.
Save this graphic for quick reference, and share it with someone dealing with neck or arm symptoms!
Disclaimer: This post is for educational purposes only. If you are experiencing radicular pain, numbness, or weakness, consult a healthcare provider for a clinical evaluation.
