Medically reviewed by Matthew Lyons, MD
Most sore shoulders I see are not torn. A weekend of yard work, a long day of moving boxes, or a first round of pickleball after the winter can leave a shoulder aching, and that ache usually settles within a week or two. The question I hear most is how to tell rotator cuff tear symptoms from an ordinary sore shoulder, since early on they can overlap.
Key Takeaways
- Ordinary soreness usually improves over days to a couple of weeks. A torn rotator cuff tends to persist, and some tears get worse.
- Weakness, night pain, and a sudden change after an injury are the signs that deserve an exam.
- A tear that follows a distinct injury in an active person should be evaluated promptly, because earlier repair may help keep the tear from enlarging and retracting.
What the Rotator Cuff Does
The rotator cuff is a group of four tendons that wrap the ball of the shoulder: the supraspinatus, infraspinatus, teres minor, and subscapularis. Together they hold the ball centered in the socket and power nearly everything the arm does, from lifting a grocery bag to holding a coffee cup steady at arm’s length.
The larger deltoid muscle gets most of the credit for lifting the arm. It can’t do that job well unless the cuff keeps the ball seated. When a cuff tendon tears, the shoulder loses both strength and control.
Two Ways a Cuff Tears
Some tears are acute. A fall onto an outstretched arm, catching something heavy, or a shoulder dislocation after age 40 can tear a tendon in an instant. These patients remember the moment.
Other tears are degenerative. The tendon thins with age and repeated use, and a tear develops gradually. Degenerative tears grow more common with each decade after 50, and many of them never cause pain.
Tears are also described by depth. A partial-thickness tear frays part of the tendon. A full-thickness tear goes all the way through, and a torn tendon does not reattach itself to bone.
Rotator Cuff Tear Symptoms That Set a Tear Apart
A sore shoulder aches with use and gets better with a few days of lighter activity. Rotator cuff tear symptoms behave differently.
Three signs matter most:
- Weakness is the most telling. The arm feels tired or gives way when you lift it out to the side or overhead, even when pain is mild. Some people notice it holding a gallon of milk away from the body. Others notice they are hiking the shoulder up to get the arm onto a shelf.
- Night pain is the second sign, especially when lying on the affected side. A dull ache that radiates down the outside of the upper arm and wakes you up is a common story with cuff tears.
- A sudden change after an injury is the third sign. A pop, then immediate weakness, is a different situation from gradual soreness. That combination deserves an exam within days to weeks, not months.
Time is a useful test on its own. If a shoulder is still painful or weak after a few weeks of rest and over-the-counter care, it has earned an evaluation.
Signs That Point Somewhere Else
Not every painful shoulder with a weak feeling is a cuff tear. Stiffness in every direction, where no one can move the arm through its full range, may point toward frozen shoulder or shoulder arthritis. Pain that travels below the elbow with numbness or tingling can come from a pinched nerve in the neck. Clicking, catching, or a shoulder that feels loose after an injury may suggest a labral tear.
How I Tell a Tear From a Strain
The exam does most of the sorting. I test each cuff tendon separately, because each one has its own job and its own test. I compare how far you can lift the arm yourself with how far I can lift it for you. A large gap between the two tells me the motor is weak, not that the joint is stiff. When a shoulder can move freely but won’t lift on its own, that pattern, called pseudoparalysis, points to a large tear.
X-rays generally come first, helping to show arthritis, bone spurs, and how the ball sits in the socket. When the exam suggests a tear, an MRI shows its size, how far the tendon has pulled back, and the health of the muscle behind it. I pull up the images during your visit and walk through them with you, because the decision ahead is easier when you can see the tear yourself.
I treat the patient, not the scan. A manual laborer of 52 and a retiree of 74 with identical MRIs may reasonably get different advice. The tear matters, and so do your age, your job, and what you need the shoulder to do.
What I See in My Patients
The patient I most want to reach earlier is the one who fell six months ago, felt a pop, and decided it was nothing to worry about. By the time some of these shoulders reach me, the tendon has retracted and the muscle has started to waste. That can turn a simpler repair into a much harder one.
I also see the reverse: a patient in their 60s with a mildly sore shoulder whose MRI shows a degenerative tear. A good number of those shoulders do well with therapy, and the tear on the report doesn’t automatically mean surgery.
Complex cuff problems are a specific focus of my practice. Patients from across South King County, from Tukwila and Kent out to Covington and Black Diamond, come in after being told their tear can’t be fixed. Some of those tears can be repaired or partially repaired, and when they can’t, the options are broader than most people have heard.
My Approach When a Tear Is Found
Many partial tears and some full-thickness tears do well with physical therapy, activity changes, and time, particularly when pain is controlled and function is acceptable. I don’t recommend surgery just because a tear shows up on an MRI.
Surgery moves up the list when a full-thickness tear stays painful despite nonsurgical care or when weakness is significant. It also moves up when a tear follows a distinct injury in a younger or highly active patient. I perform arthroscopic rotator cuff repair through incisions about the size of a buttonhole, anchoring the tendon back to bone with suture anchors. Recovery means a sling in the early weeks, therapist-guided motion before strengthening, and several months before demanding activity. I lay that timeline out before anyone decides.
For large, long-standing tears that can’t be repaired, the options for an irreparable rotator cuff tear include tendon transfer for younger, active patients without significant arthritis. When arthritis or pseudoparalysis is present, reverse total shoulder replacement may be the more predictable answer, and I use the InSet® Reverse Shoulder System with ProVoyance® CT-based 3D planning for those cases.
Summary
A sore shoulder usually improves within days to a couple of weeks. Rotator cuff tear symptoms, especially weakness, night pain, and a sudden change after an injury, tend to persist. Degenerative tears are common and don’t always cause trouble, so the exam and imaging have to agree before a tear is treated. Plenty of tears respond to therapy, and acute tears in active people benefit from prompt evaluation.
If your shoulder is weak, waking you at night, or hasn’t recovered a few weeks after an injury, don’t wait for it to sort itself out. Request an appointment in Renton or Maple Valley. Bring any imaging you already have, and I will go through it with you at the first visit.
Frequently Asked Questions
Can a rotator cuff tear heal on its own?
A torn tendon does not reattach itself to bone. Even so, many tears become comfortable and functional with therapy and activity changes, which is why not every tear needs an operation.
How can I tell if my shoulder pain is a tear or tendinitis?
Weakness is the biggest clue. Tendinitis hurts but the arm keeps its strength, while a tear frequently makes the arm tire or give way when lifted. An exam is the reliable way to tell them apart.
Do I need an MRI to diagnose a rotator cuff tear?
The exam and X-rays come first. An MRI may be useful when the exam suggests a tear, when surgery is being considered, or when symptoms haven’t improved with therapy.
What happens if a torn rotator cuff goes untreated?
Some tears stay stable and manageable. Others enlarge and retract over time, which can make later repair harder and, in some cases, lead to cuff tear arthropathy. Periodic reevaluation helps catch a changing tear.
How long is recovery after rotator cuff surgery?
Plan on a sling for the early weeks, several months of progressive therapy, and a return to demanding activity after that as healing allows. Timelines vary with tear size, tissue quality, and your goals.