Written and reviewed by the BPR clinical team. Last reviewed: 30 July 2026. This article is for education and is not a substitute for individual assessment, diagnosis or treatment by a qualified healthcare professional.
Shoulder pain has a way of intruding on everything — reaching for a seatbelt, putting on a coat, lying on your side at night. For most people, the source is the rotator cuff, and the word alone can sound alarming, conjuring images of tears and surgery. In reality, most rotator cuff pain is manageable, and exercise is usually the first and most effective step.
What is the rotator cuff?
The rotator cuff is a group of four muscles and their tendons that surround the shoulder, keeping the ball centred in the socket and controlling movement. It is responsible for around 70% of shoulder pain (Hopewell et al., 2021). Most of that pain comes from these tendons becoming overloaded and irritated — often called rotator cuff tendinopathy or subacromial shoulder pain.
It's worth knowing that not every rotator cuff “tear” needs fixing. Age-related changes in these tendons are extremely common and are often present in people with no pain at all, which is why a change on a scan doesn't automatically mean surgery (Kulkarni et al., 2015).
Why does it happen?
The usual culprits are overload and repetition — a spike in overhead activity, a new gym routine, a lot of DIY or a job with sustained arm use. Age-related tendon change adds to the picture, and occasionally a specific injury is involved. As with tendon problems elsewhere in the body, it's frequently a story of doing more than the tissue was ready for.
What does it feel like?
Typical features are pain when lifting or reaching, especially overhead, often with a “painful arc” partway through raising the arm. Night pain — particularly lying on the affected side — is common, and some people notice weakness. Unlike a frozen shoulder, the shoulder usually isn't globally stiff; it's the loaded movements that hurt.
How it's assessed
We'll watch how your shoulder moves, test its strength in specific positions, and use targeted tests to identify the cuff as the source. Part of the assessment is distinguishing it from a frozen shoulder (where stiffness dominates) and from neck-related pain that can refer into the shoulder, since these need different plans.
What the evidence says
- Exercise is as effective as other first-line care. In the large UK GRASP trial, a progressive exercise programme produced outcomes no different from best-practice advice for rotator cuff disorders (Hopewell et al., 2021).
- Injections add little over time. The same trial found a subacromial corticosteroid injection gave no meaningful added benefit over 12 months (Hopewell et al., 2021).
- Guidance is exercise-led. National and specialist guidance position exercise-based rehabilitation as first-line for most rotator cuff (subacromial) shoulder pain (Kulkarni et al., 2015), consistent with systematic-review evidence (Littlewood et al., 2012).
How it's treated
For most people, exercise-based rehabilitation is the first-line treatment, and the evidence shows it's as effective as other options for many rotator cuff problems. A progressive loading programme — gradually strengthening the cuff and the muscles around the shoulder blade — reduces pain and restores function over a period of weeks to months.
Hands-on treatment can ease symptoms along the way. Some people are offered a corticosteroid injection, though the evidence suggests any benefit is short-lived; surgery has a role in specific cases, such as significant traumatic tears in younger, active people. But for the common overload-type shoulder, patient, progressive strengthening is what turns it around — and resting a painful shoulder into stiffness usually does more harm than good.
What you can do yourself
Keep the shoulder moving within comfort rather than resting it completely, and commit to a progressive strengthening programme once you've been guided on the right exercises. Temporarily modify the overhead or repetitive activities that flare it, and build them back gradually as your strength returns.
When to seek help
When to seek help. Seek prompt review if you can't actively lift your arm after an injury or fall (which can signal a significant tear), if you have marked weakness, or if the joint is hot and swollen or you feel generally unwell. Otherwise, see a clinician if shoulder pain is persistent, disturbing your sleep, or limiting your daily activities.
Frequently asked questions
Do I have a tear, and does it need surgery?
Not necessarily. Many rotator cuff tears — especially age-related ones — are painless and manageable with exercise. Surgery is reserved for specific cases, often significant traumatic tears in younger, active people.
Should I rest my shoulder?
Complete rest tends to make it stiffer and weaker. Keeping it moving within comfort and loading it progressively is more effective.
Will I need a scan?
Often not. Scans frequently show age-related changes that are present in painless shoulders too, so they don't always change the plan.
Does a cortisone injection work?
It may give short-term relief for some people, but the GRASP trial found no meaningful added benefit over 12 months compared with exercise or advice (Hopewell et al., 2021).
How long does recovery take?
Typically weeks to a few months of consistent strengthening, depending on how long it's been going on and how irritable the shoulder is.
How BPR can help
At BPR we'll pinpoint whether it's the rotator cuff, the joint capsule or your neck, and build a progressive loading plan that gets your shoulder working overhead and through the night again. You can book an assessment at bpr.rehab.
References
- Hopewell, S., Keene, D.J., Marian, I.R. et al. (2021) 'Progressive exercise compared with best practice advice, with or without corticosteroid injection, for the treatment of patients with rotator cuff disorders (GRASP): a multicentre, pragmatic, 2 × 2 factorial, randomised controlled trial', The Lancet, 398(10298), pp. 416–428. doi:10.1016/S0140-6736(21)00846-1.
- Kulkarni, R., Gibson, J., Brownson, P. et al. (2015) 'Subacromial shoulder pain', Shoulder & Elbow, 7(2), pp. 135–143. doi:10.1177/1758573215576456.
- Littlewood, C., Ashton, J., Chance-Larsen, K. et al. (2012) 'Exercise for rotator cuff tendinopathy: a systematic review', Physiotherapy, 98(2), pp. 101–109. doi:10.1016/j.physio.2011.08.002.