Rotator Cuff Tear Symptoms: How to Tell a Tear from a Strain

What is a rotator cuff tear?

The rotator cuff is a sleeve of four muscles and tendons wrapping your shoulder ball, keeping it centred in its shallow socket while the bigger muscles move it. A tear is a disruption of one of those tendons — partial (fraying through part of the thickness) or full-thickness (a hole right through).

Two very different origin stories:

• Traumatic tears — a fall, a heavy pull, a dislocation. Sudden pain and often immediate weakness.
• Degenerative tears — gradual wear, increasingly common with age. Here's the part that surprises people: imaging studies find cuff tears in roughly a fifth to a third of people over 60 with no shoulder pain at all. A tear on a scan is not automatically the cause of your pain.

The symptoms, and what they suggest

• Pain over the outer shoulder and upper arm — cuff pain characteristically refers down towards the deltoid, rarely below the elbow.
• Night pain, especially lying on that side. The cuff's classic calling card — light sleepers learn which shoulder is injured before any test confirms it.
• A painful arc: pain through the middle range of lifting the arm sideways (roughly 60–120°), often easing at the top.
• Weakness with rotation or lifting — struggling to pour a kettle at arm's length, reach a seatbelt, or fasten a bra.
• True can't versus painful won't: this is the key distinction. Pain that limits effort suggests irritation or strain; an arm that drops or genuinely cannot hold positions despite modest pain raises suspicion of a significant tear.

One shoulder problem that isn't on this list but gets confused with it often: a shoulder that's stiff in every direction, not just weak or painful in specific ones. If someone else can barely rotate your arm outward for you either, that's a different mechanism entirely — see my guide to frozen shoulder symptoms for the passive-rotation check that tells the two apart.

Sudden inability to lift the arm after an injury — especially in younger people — deserves prompt assessment, because acute full-thickness tears do best when addressed early. The NHS shoulder pain guidance covers when to seek help.

Torn rotator cuff: physiotherapy or surgery?

Once a tear is suspected or confirmed, the next question is which pathway it belongs on — and for most people the answer is physiotherapy first. The decision logic I use:

• Degenerative tears (the majority): rotator cuff injury physiotherapy is the first-line treatment, including for many full-thickness tears. Randomised trials comparing structured exercise with surgery for these tears show similar outcomes for a large share of patients — and rehab carries none of the surgical risks or the year-long recovery. The programme itself is my rotator cuff physiotherapy programme: a proper run at it is 12 weeks.
• Acute traumatic tears with real weakness — especially in younger or higher-demand people — go the other way: prompt surgical opinion, because repairs done early do better than repairs done late. This is the one group where "try physio for three months first" can cost something.
• The middle ground — significant tears in active people, or shoulders that fail 8–12 weeks of genuine rehab — is where imaging, a surgical consultation and an honest conversation about demands and timelines all earn their place.

Worth knowing about alongside that physio-versus-surgery decision: for a specific, imaging-confirmed subgroup — calcific tendinopathy of the cuff — shockwave therapy has genuinely solid trial evidence and is sometimes discussed as a further non-surgical option before or alongside the surgical conversation. It's a narrower fit than it sounds, though: the strong evidence is specifically for calcific deposits, not tears themselves.

How I assess a suspected tear in clinic

1. The story first. Trauma plus immediate weakness is a different pathway from six months of creeping night ache.
2. Strength testing in specific directions — each cuff tendon has its job, and testing them separately localises the problem better than any general movement.
3. Scans when they'd change the plan. Suspected acute full-thickness tears, or shoulders failing 8–12 weeks of good rehab. Scanning every sore shoulder mostly finds red herrings.

Common misconceptions I see in my patients

• "A tear means surgery." Most degenerative tears — including many full-thickness ones — do well with structured strengthening; trials comparing rehab with surgery for these show similar outcomes for many patients. My rotator cuff exercise programme is that pathway.
• "The scan found a tear, so that's the answer." Given how common pain-free tears are, the finding has to match the story and the examination before it earns the blame.
• "I should rest it until it stops hurting." Rested shoulders stiffen and weaken; the cuff recovers through graded loading, not hibernation.

FAQ: rotator cuff tear symptoms

Can a rotator cuff tear heal on its own?

Torn tendon tissue doesn't knit back to bone by itself — but that's less gloomy than it sounds, because symptoms frequently resolve fully with strengthening as the remaining cuff takes up the job.

What does a rotator cuff tear feel like versus a strain?

They can feel identical: outer shoulder ache, night pain, weakness with lifting. Strains trend towards full recovery in weeks; a tear is more likely with trauma, age over 50, and weakness that persists once pain is controlled.

When should I get a shoulder scanned?

Promptly after significant trauma with weakness; otherwise, after a proper course of rehab (8–12 weeks) hasn't delivered. Scans answer surgical questions — they don't replace the rehab trial.