Nearly Everyone Over 40 Has a Rotator Cuff Tear on MRI. Should You Be Worried?

If you are over 40 and your MRI report mentions a rotator cuff tear, tendinopathy, or degeneration, it can sound serious.

But what if I told you that nearly everyone over 40 has some form of rotator cuff “abnormality” on MRI?

A large 2026 study published in JAMA Internal Medicine examined this exact question.

What Did the Study Actually Do?

Researchers randomly selected 602 adults aged 41 to 76 from the general population in Finland. These were not just patients seeking care. Many had no shoulder pain at all.

Each participant:

• Underwent high-quality 3-Tesla MRI of both shoulders

• Completed detailed symptom questionnaires

• Had a standardized clinical exam

• Had scans interpreted by experienced radiologists who were blinded to symptoms

This design makes the findings highly trustworthy.

The Results Were Striking

Here is what they found:

• 98.7 percent of participants had at least one rotator cuff abnormality

• 62 percent had partial-thickness tears

• 11 percent had full-thickness tears

• Only 7 out of 602 people had completely normal tendons

Even more important:

• 96 percent of pain-free shoulders had rotator cuff abnormalities

• 98 percent of painful shoulders had rotator cuff abnormalities

In other words, MRI findings were nearly identical whether someone had pain or not.

The graph from the study clearly shows that these changes increase with age and become extremely common after 50.

Figure adapted from Ibounig et al., 2026, JAMA Internal Medicine, CC-BY 4.0 License.

What This Means for You

An MRI finding does not automatically explain your pain.

As we age, structural changes in tendons are extremely common. Many of these findings likely represent normal age-related changes rather than a true injury.

This is similar to arthritis on an X-ray or disc bulges in the spine. They may look dramatic on imaging but are often present in people who feel completely fine.

The presence of a tear does not automatically mean:

• You need surgery

• You should stop being active

• Your shoulder is permanently damaged

Focus on Function, Not Fear

The most important questions are:

• Can you lift your arm?

• Can you sleep?

• Can you perform daily activities?

• Is your strength improving?

Function matters more than imaging.

Many patients with MRI-confirmed rotator cuff tears regain full function with conservative care, including progressive strengthening, mobility work, and proper load management.

When Should You Be Concerned?

Imaging matters more in cases of:

• Acute traumatic injury

• Sudden significant strength loss

• Large tears with major functional limitation

But for gradual shoulder pain, MRI findings alone should not drive fear.

The Bottom Line

Nearly everyone over 40 has some rotator cuff changes on MRI.

Most of the time, these findings are part of normal aging and do not require aggressive treatment.

If you have questions about your MRI or shoulder pain, we are here to help you interpret the evidence and focus on restoring function so you can continue living an active life.

Reference:

Ibounig, T., Järvinen, T. L. N., Raatikainen, S., Härkänen, T., Sillanpää, N., Bensch, F., Haapamäki, V., Toivonen, P., Björkenheim, R., Ryösä, A., Kanto, K., Lepola, V., Joukainen, A., Paavola, M., Koskinen, S., Rämö, L., Buchbinder, R., & Taimela, S. (2026). Incidental rotator cuff abnormalities on magnetic resonance imaging. JAMA Internal Medicine. Advance online publication. https://doi.org/10.1001/jamainternmed.2025.7903