Can Spinal Stenosis Cause Shoulder Pain?

Spinal stenosis in the cervical (neck) region can absolutely cause shoulder pain, and it does so frequently. A scoping review of patients diagnosed with degenerative cervical myelopathy found that neck and shoulder pain was present in roughly half of all cases, making it the most common type of pain reported.¹ The catch is that shoulder pain from the cervical spine feels a lot like shoulder pain from the shoulder itself, which makes this one of the most commonly misdiagnosed overlaps in orthopedics.

Where the Pain Actually Comes From

The cervical spine houses nerve roots that supply sensation and motor control to the shoulder, arm, and hand. When stenosis narrows the spinal canal or the openings where nerves exit (the foramina), it can compress or irritate those nerve roots. The result is pain that shows up not in the neck but in the area the nerve serves, which for several cervical levels means the shoulder and the region around the shoulder blade.

Research mapping referred pain patterns from the cervical facet joints and dorsal nerve branches has shown that structures at the C4/5 and C5/6 levels refer pain to the area above the shoulder blade, while the C6/7 level and the C6 and C7 nerve branches send pain to the upper angle of the shoulder blade. The C7/T1 level and C7 branch refer pain even lower, to the mid-scapular region.² These patterns explain why someone with a problem at C5 or C6 might walk into a clinic pointing at their shoulder and never mention their neck at all.

Two broad types of cervical stenosis produce shoulder symptoms in different ways. Cervical radiculopathy, where a single nerve root is pinched, typically causes pain radiating down the arm in a predictable pattern, often with numbness or weakness. Cervical myelopathy, where the spinal cord itself is compressed, tends to creep up more gradually and can produce shoulder pain alongside clumsiness in the hands, balance trouble, and changes in gait.³ Myelopathy is the more serious of the two, and the shoulder pain it produces is sometimes the only early symptom a patient notices.

Why It Gets Mistaken for a Shoulder Problem

Cervical spondylosis (the degenerative changes that cause stenosis) can produce pain in the neck and shoulder area that closely mimics rotator cuff disease, nerve compression at the shoulder, or brachial neuritis.⁴ The overlap is so convincing that patients sometimes undergo shoulder surgery before anyone thinks to look at the neck. One published case report described a patient who had a cervical disc surgery that failed to relieve symptoms because the real problem turned out to be in the shoulder. The authors highlighted how MRI’s sensitivity can work against patients: imaging picks up age-related disc changes that look like plausible surgical targets but may not be the actual source of pain.⁵

The confusion runs in both directions. Cervical stenosis gets blamed for shoulder pain that actually originates in the rotator cuff, and rotator cuff tears get blamed for pain that is really radiating from the neck. A study specifically investigating whether cervical foraminal stenosis at C5 and C6 might cause rotator cuff tears through altered shoulder mechanics found no significant link. The only factor strongly associated with rotator cuff tears was age.⁶ In other words, having cervical stenosis does not make your rotator cuff more likely to tear, but the two conditions are common in the same age groups, so they coexist by coincidence more often than people assume.

The Imaging Trap

One of the biggest pitfalls in diagnosing cervical-origin shoulder pain is trusting the MRI too much. A case-control study compared cervical spine MRI findings between people who came to a primary care clinic with shoulder pain and a matched group without shoulder pain. About half of both groups had at least one abnormal finding on cervical MRI, including disc degeneration, nerve compromise, foraminal stenosis, or canal narrowing. The rates were virtually identical between the two groups.⁷

The takeaway is sobering: seeing stenosis on an MRI does not mean it is causing your shoulder pain. Degenerative changes in the cervical spine are extremely common with age and are frequently present in people who feel perfectly fine. An MRI finding only matters if it matches your symptoms, your exam, and your nerve distribution. Without that clinical correlation, the image is noise.

Clinical Tests That Help Sort It Out

Because imaging alone is unreliable for pinpointing the pain source, physical examination tests play an outsized role. A few are worth knowing about if you are trying to figure out whether your shoulder pain is coming from your neck.

The Spurling test is one of the most commonly used. Your clinician turns and tilts your head toward the painful side while pressing downward. If this reproduces your arm or shoulder pain, it suggests a cervical nerve root is involved. The test is highly specific, meaning a positive result is quite reliable, but its sensitivity is low, meaning it misses many real cases. One study measured its sensitivity at about 30% and its specificity at 93%.⁸ So a positive Spurling test is strong evidence in favor of a cervical source, but a negative one does not rule it out.

Another approach, the upper limb tension test, stretches the nerves running through the arm to see if that provokes symptoms. It tends to be more sensitive (catching more true cases) but less specific than the Spurling test, meaning it also flags people whose pain comes from other causes.⁹ These tests work best when used in combination rather than alone.

A newer addition is the arm squeeze test, where the examiner squeezes the middle third of your upper arm. If that squeeze reproduces your shoulder or arm pain, it strongly suggests radiculopathy rather than a local shoulder problem. In one study, about 97% of patients with a positive arm squeeze test turned out to have radiculopathy on imaging, while less than 4% of patients with rotator cuff disease tested positive.¹⁰ It is a simple bedside test that clinicians underuse.

Diagnostic Nerve Root Blocks

When imaging shows degeneration at multiple cervical levels and clinical tests are ambiguous, selective diagnostic nerve root blocks can narrow down the culprit. A small amount of anesthetic is injected around a specific nerve root under imaging guidance. If that injection temporarily eliminates your shoulder pain, you have strong evidence that particular nerve root is driving the symptoms.

This technique is particularly useful when planning surgery, because operating at the wrong level achieves nothing. In one series of 30 patients with multilevel cervical degeneration and radicular pain, 22 underwent treatment guided by the block results, and 18 reported good or excellent outcomes.¹¹ While that is a small sample, the logic is sound: if you can turn the pain off by numbing a specific nerve, that nerve is almost certainly the problem.

When Both Problems Exist at the Same Time

People in their fifties and sixties commonly have both cervical stenosis and rotator cuff disease. They did not get one from the other; they just accumulated two age-related conditions simultaneously. This “dual pathology” scenario is the hardest to manage because each condition can amplify the other’s symptoms, and treating only one may leave the patient frustrated.

A study of patients who underwent anterior cervical discectomy and fusion (ACDF) for cervical disc disease found that about 69% had their shoulder symptoms resolve after the neck surgery.¹² That is encouraging, but it also means roughly a third still had shoulder pain afterward, many of whom turned out to have a coexisting shoulder problem that had been masked or overshadowed by the cervical symptoms. Separate research comparing outcomes in patients with concurrent cervical spondylosis and shoulder dysfunction found that patient-reported success and pain scores were similar whether patients had cervical spine surgery or shoulder surgery.¹³ The implication is that identifying the primary pain generator before surgery matters more than the type of surgery itself.

Conservative Treatment Options

Not every case of cervical-origin shoulder pain needs surgery. Physical therapy that targets the cervical spine can make a meaningful difference, even when the main complaint is shoulder pain. In one case series, 10 of 11 patients with cervical radiculopathy improved with a combination of manual therapy, cervical traction, and strengthening exercises over an average of about seven sessions, with gains maintained at six months.¹⁴

A randomized trial compared exercise alone, exercise with mechanical traction, and exercise with over-door traction. Mechanical traction combined with exercise led to lower disability scores at both six and twelve months compared to exercise alone.¹⁵ The evidence is not enormous, but it consistently points toward supervised, cervical-focused rehabilitation as a reasonable first step before considering injections or surgery.

When the shoulder itself appears to be affected by cervical nerve irritation, treating the nerve tissue directly can help the shoulder. A case report documented a patient with severe shoulder pain and limited range of motion whose disability score dropped from 83% to essentially zero after a manual therapy approach that addressed cervical spine impairments and upper limb neural tissue. At six months, the patient had returned to full activity.¹⁶ That is a single case, not a guideline, but it illustrates a principle: when the cervical spine is the upstream problem, treating only the downstream shoulder may miss the point entirely.

The Spine-Shoulder Biomechanical Link

Beyond direct nerve compression, your spine’s posture and alignment can affect your shoulder’s ability to move normally. A systematic review found that spinal alignment influences shoulder range of motion and the way the shoulder blade sits and moves. The authors compared this relationship to “hip-spine syndrome,” where lumbar spine degeneration and hip arthritis feed off each other. The same dynamic appears to exist between the thoracic and cervical spine and the shoulder: altered alignment or stiffness in one area changes how the other works.¹⁷

A prospective cohort study in middle-aged and older adults confirmed that increased thoracic kyphosis (a more rounded upper back), greater spinal inclination, and weaker back muscles were all risk factors for limited shoulder range of motion.¹⁸ This matters because spinal stenosis and the degenerative changes that accompany it often alter posture. Even if the stenosis itself is not directly pinching a shoulder nerve, the postural changes it encourages may still contribute to shoulder stiffness and discomfort over time.

Conditions That Look Similar

Cervical stenosis is not the only condition that produces overlapping neck and shoulder symptoms. Two others are worth knowing about because they can be mistaken for cervical stenosis or vice versa, and the treatments are very different.

Thoracic outlet syndrome (TOS) involves compression of nerves or blood vessels in the space between the collarbone and first rib. It causes neck and shoulder pain along with tingling or numbness in the hand and fingers. Differentiating TOS from cervical spine disorders is difficult, especially when cervical imaging turns up degenerative findings that could plausibly explain the symptoms.¹⁹ TOS remains controversial as a diagnosis because its mechanisms are complex and there is no single definitive test.²⁰ The danger is that a clinician sees cervical stenosis on MRI and stops looking, when the actual pain generator is being compressed further downstream.

Parsonage-Turner syndrome is a rare condition where the brachial plexus (the nerve network serving the arm) becomes inflamed for reasons that are often unclear. It starts with sudden, severe shoulder pain, usually on one side, followed by progressive weakness and sometimes numbness.²¹ Because it involves nerves and produces shoulder pain with neurological symptoms, it can initially be mistaken for cervical radiculopathy. The onset pattern is the giveaway: Parsonage-Turner typically hits abruptly and severely, whereas cervical radiculopathy from stenosis tends to build more gradually.²²

How EMG Fits Into the Workup

Electrodiagnostic testing, commonly called EMG and nerve conduction studies, is often ordered when cervical radiculopathy is suspected. The idea is to detect which nerve root is affected by measuring electrical activity in the muscles that nerve supplies. But the test has real limitations. One study that critically evaluated EMG accuracy found a sensitivity of about 77% and a specificity of about 71% for detecting radiculopathy.²³ That means it misses roughly one in four true cases and falsely flags about three in ten people who do not have radiculopathy. Agreement between different examiners reading the same test was moderate at best.

EMG is most useful when it is positive and matches the clinical picture. A negative EMG, like a negative Spurling test, does not rule out cervical stenosis as a cause of your shoulder pain. The best diagnostic approach uses EMG as one piece of evidence alongside your history, your physical exam, and your imaging, rather than hanging the entire decision on any single test.

Lumbar Stenosis and Shoulder Pain

Most of this article has focused on cervical stenosis because it directly involves the nerves that serve the shoulder. Lumbar (low back) stenosis, the type most people picture when they hear “spinal stenosis,” does not compress shoulder nerves and would not directly cause shoulder pain. However, there is an indirect route worth mentioning. Lumbar stenosis often changes how you walk and how you hold your body, promoting a more stooped, forward-leaning posture. Over months or years, that postural shift can load the thoracic and cervical spine differently, potentially contributing to shoulder problems through the biomechanical chain described earlier. This is not the same as lumbar stenosis “causing” shoulder pain in any direct neurological sense, but patients who have been dealing with low back stenosis for years sometimes notice their shoulders stiffening up as well.

Cervical instability from ligament laxity presents yet another pathway to shoulder pain. In people with connective tissue disorders, loose cervical ligaments can allow excessive movement in the upper neck, producing a constellation of symptoms that includes headache, nausea, neck and shoulder pain, and sometimes burning between the shoulder blades. This is a different mechanism from stenosis but can coexist with it, and the shoulder pain it generates can be especially stubborn because the underlying instability is not easily seen on standard imaging.