In this post, we discuss rotator cuff tears after 40 and what MRI findings really mean for shoulder pain in light of a new study.
If you’re over 40, exercise, and have ever had shoulder pain, chances are someone has mentioned your rotator cuff.
The rotator cuff is a group of four muscles that attach to the humerus and provide stability to the shoulder joint.
If you’ve suffered ongoing shoulder pain, you may have had an MRI that showed a “tear” or “tendinopathy” in the tendon of one or more of these muscles.
A new population study from Finland offers some interesting insights into such findings.
The big question
Researchers wanted to know:
How common are rotator cuff abnormalities in the general population—and do they relate to shoulder pain?
What they did
The researchers randomly selected 602 adults aged 41–76 from across Finland. Everyone had:
- A detailed clinical shoulder exam
- Questionnaires about pain and function
- High-resolution 3-Tesla MRI scans of both shoulders
This wasn’t a study of injured patients in a clinic. It was regular middle-aged and older adults from the general population.
The results
Here’s what they found:
- 99% of participants had at least one rotator cuff abnormality on MRI.
- 25% had tendinopathy.
- 62% had partial-thickness tears.
- 11% had full-thickness tears.
- Abnormalities increased with age.
- Men and women were similar.
Now here’s what’s really interesting:
- 96% of shoulders without pain had abnormalities.
- 98% of painful shoulders had abnormalities.
In other words:
- Almost everyone had changes on MRI.
- It didn’t reliably explain who had pain.
Even full-thickness tears—often considered serious—were only slightly more common in painful shoulders, and that difference mostly disappeared after statistical adjustment.
What this means for you
If you’re in your 40s, 50s, or 60s:
- A “tear” on MRI is probably a normal age-related change.
- Structural findings often don’t match symptoms.
- Imaging alone shouldn’t dictate the next steps.
Think of them like grey hair or wrinkles. It’s tissue ageing—not necessarily injury.
Why this matters in rehab and training
Too often, people get an MRI for atraumatic shoulder pain and:
- Panic over the word “tear”
- Avoid loading the shoulder
- Reduce activity unnecessarily
- Consider surgery prematurely
But this study suggests rotator cuff changes are nearly universal after 40.
So if nearly everyone has them, they can’t automatically be the cause of pain.
And if nearly everyone has them after 40, and you haven’t exercised in a while, you might want to apply caution when training the muscles of the shoulder. Particularly when starting out.
A smarter approach
For active adults, this reinforces some key rehab principles:
- Pain doesn’t necessarily indicate damage
- Appropriate loading builds resilience
- An assessment matters more than imaging
Imaging can be helpful in specific cases (major trauma, suspected full rupture, surgical planning). But for typical age-related shoulder pain? Routine MRIs may not guide treatment meaningfully. In fact, they may even be counterproductive.
Summary
If your MRI says “partial tear” and you’re over 40, your shoulder isn’t broken—it’s normal.
Keep training smart. Load progressively. Focus on function.
Your shoulder is more than a scan.