Symptoms of a shoulder muscle tear often develop gradually: at first, you feel only a dull ache when lifting your arm out to the side, but a couple of weeks later, you can no longer manage to take a cup down from a shelf. A tear in the rotator cuff, the group of 4 muscles surrounding the shoulder joint, is among the most common shoulder injuries in adults — and many people mistakenly dismiss it as mere joint fatigue.
In this article, we look at how the injury occurs, which symptoms to take seriously, how your shoulder is examined and what treatment actually involves. In short: the sooner you act, the better the prognosis.
How a shoulder muscle tear occurs
There are 4 muscles attached to the end of the upper arm bone, near the shoulder joint. Their role is to lift your arm out to the side and rotate it at the shoulder. A tear involves damage to the tendons of these muscles.
In younger people, it usually starts with trauma — suddenly lifting a weight, falling onto an outstretched hand or a sudden stretch. In older people, the process is different: the tendon tissue gradually changes, often because of an impaired blood supply. The normal structure of the fibers breaks down, setting the stage for a tear. An important detail — the tear may not be complete at first. Initially, your arm may function almost normally, leaving you thinking it will get better on its own.
So what actually happens? A partial tear can easily become a complete tear if you continue to put strain on it. Every subsequent workout, every lift of a heavier bag, worsens the damage.
Muscle tear symptoms — what you feel
With a partial tear, the first sign is simply pain around the shoulder joint. The pain may worsen at night, especially if you sleep on the injured side. If the tendon is completely torn, you have less strength when lifting your arm out to the side, or you may be unable to lift it at all. You can raise your arm further once it reaches shoulder height — but this movement is distinctly painful.
During the acute phase, swelling may develop over the shoulder joint. If you are slim, it is sometimes possible to feel the tear in the tendon by touch. Here is a short checklist of typical signs:
- Pain on the outside of your shoulder, especially when lifting your arm out to the side.
- Nighttime pain that wakes you or prevents you from sleeping on the injured side.
- Weakness in your arm — difficulty holding an object on a shelf or combing your hair.
- Swelling around the shoulder joint after exertion.
- A clicking or grinding sensation when moving your arm.
If these muscle tear symptoms last more than a couple of weeks or get worse, it is time to see a doctor rather than wait for the injury to heal on its own.
Diagnosis and treatment options
Diagnosing a tendon tear starts with a discussion and a physical examination of the area around your shoulder joint by touch. Your doctor also assesses your range of motion and asks you to perform some test movements. The initial investigations then include an X-ray and an ultrasound scan, also known as sonography. If needed, magnetic resonance imaging is also available in Tallinn and Tartu and provides the most detailed images of soft tissues.
Treatment depends on the extent of the tear. There are 3 main approaches:
- Oral medication. Initial treatment involves tablets from the nonsteroidal anti-inflammatory drug group to reduce inflammation and relieve pain (such as diclofenac and ibuprofen). These relieve symptoms but do not repair the tendon itself.
- Rehabilitation. This begins as the pain subsides — your arm is briefly supported in a sling or splint. Specific therapeutic exercises begin immediately afterward. This is the most important part: if the joint is left immobile for a prolonged period, joint stiffness can develop within about 1 year, and reversing it takes time.
- Surgical treatment. For large or complete tears, the tendon is surgically reattached to the bone or stitched back together. Surgery is also followed by a long recovery period.
If the pain is very severe, your arm is immobilized in a splint, and therapeutic exercises begin as soon as the pain subsides. Recovery from the injury takes a long time — several months to 1 year. Because the shoulder joint is immobilized in a splint during treatment, your range of motion may remain slightly restricted afterward. This is precisely why rehabilitation sessions are an essential part of comprehensive treatment, rather than an optional extra.
Muscle tear symptoms during recovery: what to watch for
It is worth listening to your body even after treatment begins. Mild discomfort during exercises is normal — it shows that the joint is starting to work. Sharp, stabbing pain, shoulder swelling after exercises or a sudden reduction in your range of motion are causes for concern. These are signs that you should return to your doctor or physiotherapist.
A practical tip: keep a simple diary at home. Note which movement caused pain and how long it lasted. A week’s worth of notes will give your physiotherapist a clearer picture of your progress than you could provide from memory.
How to prevent injury
Because a rotator cuff tear often results from trauma, it cannot always be prevented. Still, there is plenty you can do to reduce the risk. The main rule is to avoid excessive training loads. If you develop persistent shoulder pain during or after training, reduce your training load and get assessed. Warming up before lifting weights, specifically strengthening your shoulder stabilizers and avoiding jerking your head during behind-the-neck pulldowns provide long-term protection against minor damage that can contribute to a tear over the years.
This injury is most common among volleyball players, javelin throwers, strength athletes and athletes whose movements frequently take place above shoulder level. It is difficult to single out a particular sport—the underlying cause is a change in the tendon tissue, rather than the sport alone.
FAQ — muscle tear symptoms and treatment
Can a shoulder muscle tear heal on its own?
Small partial tears may improve with rest and rehabilitation. A complete tear will not knit back together on its own—the tendon requires either surgical reattachment or, at the very least, a structured recovery plan. Taking a wait-and-see approach to self-treatment often leads to chronic pain.
When should you see a doctor about muscle tear symptoms?
If your shoulder pain lasts longer than 2 weeks, disrupts your sleep or leaves you unable to raise your arm out to the side, it is time to see your family doctor or an orthopedic specialist. If you experience sudden, severe pain and weakness after an injury, my advice is: do not delay—seek medical attention immediately.
How long does recovery take after a shoulder tear?
Recovery is a lengthy process. A partial tear usually requires a few months of active rehabilitation, while recovery from a complete tear treated with surgery takes about 1 year, during which mobility and strength gradually return.
Author: Marek Morozov
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