My Shoulder Hurts — Is It the Labrum or the Rotator Cuff?
Why Two Different Injuries Can Feel Surprisingly Similar
As Dr. William Sterett, a board-certified orthopedic surgeon and sports medicine specialist at Vail-Summit Orthopaedics & Neurosurgery, I often meet patients who have spent weeks — or even months — trying to self-diagnose their shoulder pain.
They've searched online, watched videos, and compared their symptoms to what they've read. Most arrive convinced they either have a rotator cuff tear or a labral tear.
The reality is that these two injuries can create very different problems inside the shoulder while producing symptoms that feel remarkably similar from the outside.
The First Clue Is Often How the Injury Started
One of the first questions I ask isn't where it hurts.
It's how it happened.
Rotator cuff injuries frequently develop gradually. A patient may notice increasing discomfort during workouts, soreness after a long day of activity, or weakness that seems to appear out of nowhere.
Labral injuries are more likely to be linked to a specific event.
Maybe it was a hard fall while skiing. Maybe it happened reaching for a heavy object. Maybe it occurred after years of throwing, climbing, swimming, or overhead lifting.
The story behind the injury often provides important clues before I even begin the physical exam.
Pain Isn't Always the Most Important Symptom
Many patients assume the location of their pain will reveal the diagnosis.
Unfortunately, the shoulder isn't that cooperative.
A rotator cuff injury may create pain on the outside of the shoulder, particularly when lifting the arm.
A labral tear often produces a deeper sensation that patients struggle to pinpoint. Many describe it as feeling like something is happening inside the joint rather than around it.
But pain alone rarely gives us the answer.
What often matters more is how the shoulder behaves.
When the Shoulder Feels Weak
Patients with rotator cuff problems frequently describe a loss of strength.
They can still move their arm, but everyday tasks become surprisingly difficult.
Common complaints include:
Struggling to lift luggage into an overhead compartment
Difficulty carrying groceries
Loss of power during workouts
Fatigue during repetitive overhead activities
The shoulder still feels connected and stable — it simply doesn't perform the way it once did.
When the Shoulder Feels Untrustworthy
Labral injuries often create a different complaint.
Instead of weakness, patients talk about confidence.
Or rather, the lack of it.
The shoulder may feel as though it could slip, shift, or move unexpectedly. Some people experience clicking, catching, or popping sensations. Others describe a subtle feeling that the joint isn't tracking correctly.
Athletes sometimes notice they hesitate before throwing or reaching overhead because the shoulder no longer feels dependable.
That loss of trust can be a major sign that the labrum is involved.
Why Athletes Often Struggle to Identify the Difference
The shoulder functions as a team.
The rotator cuff, labrum, cartilage, ligaments, and shoulder blade muscles all work together to create smooth motion.
When one structure becomes injured, the others often compensate.
A labral tear can lead to rotator cuff irritation.
A rotator cuff injury can alter shoulder mechanics and create instability.
As a result, symptoms frequently overlap and make self-diagnosis difficult.
The MRI Doesn't Always Tell the Whole Story
One of the biggest misconceptions about shoulder injuries is that the MRI automatically provides the answer.
Many active adults have age-related fraying of the labrum without any symptoms. Others have small rotator cuff abnormalities that are completely unrelated to their pain.
This is why imaging is only one piece of the puzzle.
The most important question isn't simply, "What does the MRI show?"
It's, "Which finding is actually causing the problem?"
The Bottom Line
If your shoulder hurts every time you reach overhead, the rotator cuff may be involved. If your shoulder feels unstable, catches during movement, or seems unreliable during sports, the labrum may deserve a closer look.
Either way, persistent shoulder symptoms are worth evaluating.
Dr. William Sterett helps athletes and active individuals uncover the true source of shoulder pain so they can return to the activities they love with confidence. Whether you're dealing with weakness, instability, or a shoulder that simply doesn't feel right, an accurate diagnosis is the first step toward recovery.
