Shoulder scan, shoulder injection, shoulder therapy. The shoulder was never the problem.

SHOULDER PAIN THAT STARTS IN THE NECK

Shoulder pain that continues past the elbow, comes with numbness, or does not hurt when someone else moves your arm is usually coming from the neck. It is often the C5 nerve root. That is why a shoulder scan, a shoulder injection and shoulder physical therapy leave it unchanged.

Can a nerve in the neck cause shoulder pain?

The C5 nerve root refers pain into the outer shoulder and upper arm. It does this so convincingly that the patient points at their deltoid, and everyone reasonably starts there. Meanwhile, a subacromial or AC joint problem refers into an area people describe as their neck. The traffic runs both ways, and it runs constantly.

A systematic review exists specifically on overlapping, masquerading and causative cervical spine and shoulder pathology. That is a fair sign of how often the two get confused, even by people who are paying attention.

How can I tell if my shoulder pain is from my neck?

• How far does it go? Shoulder pain stops around the deltoid insertion (where the shoulder muscle attaches to the arm). Neck-referred pain frequently continues past the elbow. Anything reaching the hand is not the shoulder.
• What provokes it? Overhead reaching and lying on it point to the shoulder. Neck extension (tilting the head back) and rotation (turning it) point to the neck, or cervical spine.
• Is there numbness? Shoulders do not produce numbness. A dermatomal strip of altered feeling (one nerve root’s skin zone) is a root.
• Does moving the shoulder passively hurt? Say somebody else moves your arm through its range and it hurts. Then the shoulder is involved. If it does not hurt, the pain is being referred there.
• Is there true weakness? Painful weakness is common in both. Weakness without pain points at a nerve or a cuff tear.

Could it be frozen shoulder instead?

Adhesive capsulitis (frozen shoulder) restricts passive external rotation. That single finding separates it from almost everything else. It is frequently mislabeled as impingement and occasionally as a neck problem. And it is treated completely differently — the natural history is long, the treatment is aimed at the capsule, and rotator cuff strengthening does not touch it.

It is worth naming here because it is a common answer among people who have had shoulder treatment that did nothing. It is also worth naming because the exam finding that identifies it takes about fifteen seconds.

Can you have a neck problem and a shoulder problem at the same time?

Frequently. A degenerate cervical spine and a degenerate shoulder show up together in the same population. A person can have a C5 radiculopathy (a pinched C5 nerve root) causing the arm pain and subacromial pathology causing the overhead pain. Treating one, then declaring failure when half the symptoms remain, is the predictable outcome.

Working out the share of each matters. If most of the pain is cervical, shoulder surgery will disappoint. If most is subacromial, a cervical injection will disappoint. The examination is what divides it up. It needs to cover both regions in the same appointment.

What we do about it

Examine both, every time, in the same visit. Where it is genuinely unclear, a diagnostic injection settles it. A well-placed subacromial or AC joint block that abolishes the pain for a few hours has answered the question. One that does nothing has answered it equally well.

A cuff tear on an MRI report is read against that examination, because asymptomatic cuff tears (tears that cause no pain) are extremely common with age, and the tear on the film is not automatically the source of the pain. When the exam does tie the pain to the cuff, it is usually a partial tear, and conservative care matches surgery for partial-thickness cuff tears, which are about twice as common as full-thickness ones. The prevalence comes from Eubank and colleagues’ 2024 evidence synthesis: “Studies have shown partial-thickness rotator cuff tear (PTRCT) prevalence to be twice that of full-thickness tears.” Those are the tears we treat here, with a guided injection for the pain, PRP into the tendon where it has stalled, loading for the cuff and the shoulder blade, and the metabolic work underneath. We work to avoid surgery on them.

The order we work in

Pain pattern first, because it costs nothing and narrows the list faster than any test. Then active and passive range, which separates a joint problem from a referred one. Then resisted testing to pin down the spot within the shoulder. Then the cervical provocation tests. Then, and only then, imaging read against all of it.

That sequence takes one appointment. The alternative — a shoulder service and a neck service seen six weeks apart, each doing half the examination — takes months. And it frequently still leaves the question open.

Can a neck problem cause pain around the shoulder blade?

Pain around the shoulder blade is one of the most reliable referral patterns from the lower cervical spine. It is routinely investigated as a shoulder or a muscle problem. Interscapular pain (between the shoulder blades) that neck extension brings on is cervical until proven otherwise.

It also runs the other way. Poor scapular control (shoulder blade control) loads the AC joint and the subacromial space. So a shoulder blade that does not rotate properly produces shoulder symptoms without any structure being damaged.

What the injections tell us

A diagnostic block is the tie-breaker when the examination cannot separate the two. Its value lies as much in a negative as a positive. A well-placed subacromial injection that changes nothing has removed the subacromial space from the list. That is a real result and a cheap one.

The requirement is that it be well placed. Blind injections into small structures miss often enough that a negative result from one carries much less weight than people assume.

What a shoulder examination adds that a scan does not

Active range against passive range. This is the single most informative comparison in shoulder medicine, and no image can provide it. Resisted testing in specific planes. The painful arc. And direct palpation (pressing with the fingers) of the AC joint, which pinpoints the source better than anything else in the region.

None of that requires equipment. All of it is more useful for deciding what to treat than a report listing degenerative findings. Most shoulders of that age also have those findings.

If you have already had shoulder surgery

Persistent pain after a technically successful shoulder operation is a recognized situation. A cervical contribution that was present all along is one of the explanations for it. The examination is the same either way. Having had the operation does not remove the question.

It does change the emphasis. Post-operative stiffness, altered mechanics and deconditioning (lost fitness) all become part of the picture. Separating those from a referred component is the work.

What people ask about shoulder and neck pain

My shoulder MRI showed a rotator cuff tear. Is that my pain?

Not necessarily. Cuff tears are found in large numbers of shoulders that do not hurt, and the frequency rises steeply with age. A tear earns the diagnosis when it matches the examination. Rotator cuff, or the neck?

The shoulder injection did nothing. What does that mean?

If it was accurately placed, it is a useful negative result and it points the search back toward the neck. If it was placed blind, it means less than it appears to. Neck or shoulder? It has already narrowed the field, which is worth more than it sounds.

Can a neck problem cause shoulder weakness?

Yes, and distinguishing that from a cuff tear is one of the main jobs of the examination. The pattern of which movements are weak is what separates them. How facet pain is confirmed.

Why did nobody check both?

Because the two are usually managed by different services, and each examines the region it owns. Doing both in one appointment is the whole point of this page. Neck or shoulder?

Can a rotator cuff problem cause neck pain?

The shoulder can send pain toward the neck. A problem in the subacromial space or the AC joint often refers into an area people describe as their neck, just as a neck nerve root refers into the shoulder. That is why the two get confused so often, and why both regions need to be examined in the same appointment rather than six weeks apart.

What does nerve pain from the neck feel like in the shoulder?

It tends to travel. Pain from a neck nerve root often continues past the elbow, and anything reaching the hand is not coming from the shoulder. It can bring a strip of numbness and get worse when you tilt your head back or turn it. Weakness without pain points at a nerve or a cuff tear. If it hurts when someone else moves your arm, that points at the shoulder instead.

Can shoulder pain continue after shoulder surgery because of the neck?

Yes. Pain that persists after a technically successful shoulder operation is a recognized situation, and a neck problem that was there all along is one of the explanations. After surgery, stiffness, changed movement and lost conditioning also play a part. The examination is the same either way, and separating those from pain referred from the neck is the work.

Related reading

• Rotator cuff, or the neck?
• Subacromial bursa
• AC joint pain
• Neck or shoulder?
• Cervical radiculopathy
• Why your MRI does not explain it
• Shoulder arthritis
• Biceps tendonitis

A shoulder injection that changed nothing has already narrowed the field. That result is a finding, not a failure.