Neck Pain: Which Muscle Is Actually Pulling on Your Neck?

When your neck hurts, it is easy to find the sore muscle. Press around long enough and you can usually find something tender: the upper trapezius, the levator scapulae, the muscles at the base of the skull, or the big rope-like sternocleidomastoid in the front of the neck.

The harder question is whether the tender muscle is the problem or whether it is the muscle trying to solve the problem.

Your Neck Is Being Pulled From Several Directions at Once

The cervical spine has to support the weight of the head while still allowing a tremendous amount of motion. That means the muscles around it are constantly balancing one another.

The sternocleidomastoid, or SCM, helps rotate and flex the neck. The upper trapezius and levator scapulae connect neck motion with the shoulder blade. The scalenes run from the cervical spine to the upper ribs. The deeper neck flexors help control the head and cervical segments closer to the spine.

If one part of that system stops contributing well, another part often increases its tension. This is why somebody can massage the same upper trap every day and still wake up with the same knot.

The Shoulder Blade Can Change the Neck

The neck and shoulder girdle are mechanically connected. The levator scapulae literally runs from the upper cervical spine to the shoulder blade. The trapezius spans both regions. If the scapula is sitting or moving in a poor position because the serratus anterior, lower trapezius, rhomboids, or other shoulder muscles are not controlling it well, the neck muscles may be asked to hold the shoulder girdle up all day.

This becomes especially obvious in people who feel neck pain after computer work, driving, carrying a bag, or working overhead. The symptom is in the neck, but part of the load may be coming from the shoulder.

Breathing Can Become Part of the Mechanical Pattern

The scalenes and SCM can assist with breathing by helping elevate the rib cage. They are not supposed to be the primary breathing strategy all day long, but when someone breathes predominantly into the upper chest, those muscles can accumulate a lot of additional work.

That does not mean every stiff neck is a breathing problem. It means I want to know whether the neck is doing a second job that the diaphragm and lower rib cage should be doing more efficiently.

Tight Versus Inhibited Matters

One of the central ideas I use in an Applied Kinesiology examination is the difference between a muscle that is tight and a muscle that is functioning well. Those are not the same thing.

A muscle can be extremely tight because it is doing too much. Another muscle can have poor recruitment and force the tight muscle to compensate. The original AK literature described this in terms of hypertonicity sometimes being secondary to poor function of an antagonist muscle. I think the clinically useful part of that idea is simple: do not assume the muscle that hurts is the only muscle that needs attention.

I will look at neck flexion, extension, rotation, shoulder-blade control, upper-trapezius and SCM function, deep neck flexors, and how the pattern changes with posture and movement. Manual muscle testing is part of that examination, not a stand-alone diagnosis.

Sometimes Neck Pain Is Not Primarily Muscular

Arthritic changes, disc problems, facet irritation, ligament injury, fracture, and nerve-root compression can all create neck pain. If pain shoots into the arm, there is numbness or tingling, reflex changes, progressive weakness, or symptoms are reproduced strongly by neck motion, the neurologic side of the examination becomes especially important.

Severe pain after trauma, loss of balance or hand coordination, fever, unexplained weight loss, or new bowel or bladder changes also deserve further evaluation.

The Takeaway

The sorest neck muscle is often easy to find. The reason it became sore is usually the more useful question.

Instead of repeatedly chasing the knot, look at the balance between the neck muscles, the shoulder blade, posture, breathing, and the movement pattern that keeps putting tension back into the same area. That is how you begin to find where the problem is really coming from.

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Sources

American Academy of Orthopaedic Surgeons (AAOS), OrthoInfo. Neck Pain.

American Academy of Orthopaedic Surgeons (AAOS), OrthoInfo. Cervical Radiculopathy (Pinched Nerve).

Walther DS. Applied Kinesiology Synopsis. 2nd ed. Systems DC; 2000. See Sternocleidomastoid, Neck Flexors, Neck Extensors, and shoulder-girdle muscle sections.