How Serious Is a Full-Thickness Supraspinatus Tear?

The Moment You Get the News

You've had an MRI, and the report says "full-thickness tear of the supraspinatus tendon."

If you're like most of my patients, your first question is simple: how bad is this?

The answer depends on several factors, but here's the honest truth upfront: a full-thickness supraspinatus tear will not heal on its own. The tendon cannot reattach itself to the bone. At the same time, not everyone with this diagnosis needs surgery. Understanding the difference requires looking at how your tear happened, what's likely to happen over time, and what you're hoping to get back to.

Two Very Different Injuries

When I see patients with full-thickness supraspinatus tears, they generally fall into two categories, and the distinction matters enormously for treatment.

The first is the acute traumatic tear. This typically happens in younger patients—often under 60—as a result of a specific injury. Maybe you fell off a ladder or crashed your bike or while skiing. One day your shoulder was fine, the next day it wasn't. These tears tend to occur in otherwise healthy tendon tissue.

The second is the degenerative tear. This is far more common and happens gradually over years, usually in patients over 60. The tendon slowly weakens and frays, like a rope wearing thin. You might not remember any specific injury at all, but sometimes there is one, but sometimes a minor injury, like lifting something awkwardly and feeling a pop. One day you just noticed your shoulder wasn't quite right.

Why does this matter? Younger patients also tend to have a harder time adapting to the sudden weakness—their shoulder worked fine yesterday, and now it doesn't. These tears are less likely to improve with therapy exercises and conservative treatment. Acute traumatic tears often benefit from surgical repair. Research suggests that early repair in these cases leads to better outcomes, likely because the tendon tissue is still healthy and the muscle hasn't had time to atrophy.

Degenerative tears are different. The tendon has been slowly failing for years, and your body has often been compensating without you realizing it. Many patients with degenerative full-thickness tears can be treated successfully without surgery, at least initially. Successful treatment usually means restoration of normal shoulder function (motion and strength) without pain.

What Happens If You Don't Have Surgery

Here's what I tell patients who are weighing their options: the tear will not heal, and it will likely get worse over time. But "worse" is a slow process, usually measured in years rather than months. And the symptoms can be completely separate from the physical worsening of the tear itself.

Over time, a full-thickness tear typically gets larger. The muscle itself begins to atrophy, and fatty tissue gradually replaces healthy muscle fibers. This process is usually gradual enough that many patients—especially older patients with degenerative tears—can maintain good function for years with the right approach.

Physical therapy plays a central role. The goal isn't to heal the torn supraspinatus, because that won't happen without surgery. Instead, therapy strengthens the other rotator cuff muscles and the surrounding shoulder muscles to compensate for the torn tendon. For many patients, this leads to a pain-free shoulder with full strength and full function. The tear is still there on imaging, but it's not limiting their life.

There's always some risk of re-aggravating the problem, which can lead to increased pain or weakness. But if this happens, it can frequently be controlled with another course of physical therapy.

The Point of No Return

There is a limit to how long you can wait. If the muscle atrophies beyond roughly 50% of its original volume, or if fatty infiltration becomes severe, the tear may become irreparable. At that point, even surgery can't restore normal function because there isn't enough healthy muscle left to repair.

This is why I recommend that patients with full-thickness tears stay engaged with their shoulder, even if they're not having surgery right away. Regular monitoring, continued exercises, and paying attention to changes in pain or weakness can help you make a timely decision if things start to progress. This may also require occasional (every year or two) MRIs to monitor the physical structure of the tendon. The atrophy that prevents repair is typically thought to take 5 years, but this is very unpredictable and can occur much faster.

When Surgery Makes More Sense

If you're doing well with physical therapy—minimal pain, good strength, able to do the activities you care about—then surgery doesn't offer much benefit. Surgery improves pain and weakness, so if you don't have significant pain or weakness, there isn't much to gain.

But certain situations push the balance toward surgical repair. Acute traumatic tears in younger patients often do better with early surgery. Significant weakness that limits daily activities or work is another strong indication. If you've tried physical therapy for three to six months without improvement, surgery becomes a reasonable next step. And if your tear is getting larger or your muscle is beginning to atrophy on repeat imaging, waiting may not be in your best interest. If this atrophy does occur, there will always be the reverse total shoulder replacement surgery or lower trapezius tendon transfer surgery, which tends to be two good choices for an irreparable rotator cuff tear.

I wrote a detailed guide on the surgery decision that you might find helpful: Should You Have Surgery for Your Torn Supraspinatus? A Guide to Help You Decide.

A Patient Who Chose to Wait

I'm currently treating a 72-year-old recreational basketball player with a full-thickness supraspinatus tear. He has some discomfort, but he's managing it well with activity modification, exercises, and occasional anti-inflammatory medication. He's still playing basketball.

His hesitation about surgery is understandable. Recovery means six weeks in a sling and typically four to six months before returning to full activity. There's a small risk—probably less than 5%—of losing some range of motion, which could affect his shooting. And the risk of the repair re-tearing increases with age.

For him, the calculus is clear: he's functioning well enough that the potential benefits of surgery don't outweigh the risks and recovery time. That may change someday, and we'll revisit the decision if his symptoms worsen. But for now, he's made the right choice for his situation.

The Bottom Line

A full-thickness supraspinatus tear is a real injury that won't heal on its own. Over time, most tears get larger and the muscle gradually weakens. But "serious" doesn't always mean "needs immediate surgery."

For younger patients with acute traumatic tears, early surgical repair often provides the best outcome. For older patients with degenerative tears who have manageable sympto

ms, physical therapy and activity modification can maintain excellent function for years.

Eventually, many patients will probably need surgery. But the timing should be based on your symptoms, your goals, and your life—not just what the MRI shows.

Stay Connected

I regularly share information about shoulder injuries and treatment options. You can subscribe to my email list by visiting doctorbutzen.com, or follow my YouTube channel at youtube.com/@DoctorButzen for video explanations of common orthopedic problems.

Questions?

If you're dealing with a rotator cuff tear and want to discuss your options, feel free to reach out. You can email me at doctorbutzen@gmail.com or call or text 970-403-5333. If you're in the Durango area or elsewhere in the Four Corners region, I'd be happy to see you in the office for a full evaluation.