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What do these terms mean?
The rotator cuff is a group of four muscles and their tendons. It helps lift and turn your arm while guiding the upper arm bone within the shoulder joint. Above it sits a small fluid-filled sac called a bursa, which helps tissues glide. Bursitis means irritation or inflammation of this sac.
Tendinitis emphasises inflammation. Tendinopathy is a broader term for a painful tendon whose function has changed. Several tissues may contribute to the symptoms, so assessment does not always identify one structure as the sole cause.
Understand the picture
Rotator cuff, bursa and acromion
Rotator cuff
The tendons help move and guide the arm.
Bursa
This small sac helps tissues glide.
Acromion
This part of the shoulder blade lies above the tendons.
How might it feel?
Pain often affects the outer shoulder or upper arm. Reaching a shelf, carrying something away from your body or removing a jacket may hurt. Sleep can also become difficult, particularly when you lie on the affected side.
Some people can lift the arm despite discomfort; others stop because it hurts too much. This does not directly measure tissue damage. New weakness after a fall is different: it needs prompt assessment and should not automatically be labelled ordinary tendinopathy.
Why is it called impingement?
The term originally described pinching beneath the acromion, the bony roof above the shoulder. That explanation does not account for every painful shoulder. Changes visible on a scan do not always match the symptoms, and some occur in people without pain.
Repeated overhead work, an unfamiliar increase in sport or workload, and age-related tendon changes can contribute. This does not mean that normal movement wears the shoulder away with every repetition. Assessment looks at the demands that are difficult and your current ability to manage them.
What does assessment involve?
The clinician asks when symptoms began, which activities are limited and whether you have previous injuries or unusual arm sensations. They compare movement, strength and assisted mobility, and may examine your neck. No single self-test reliably confirms a tendon problem.
Imaging answers a clinical question. An X-ray may show arthritis or calcium deposits; ultrasound or MRI may clarify the tendons. The findings must be interpreted alongside the examination. A scan does not automatically select your treatment or explain all your pain.
When should you seek medical advice?
After an accident, a changed shoulder shape, marked movement loss or new weakness needs urgent assessment. A hot, red shoulder with fever also needs prompt medical attention. Chest discomfort with arm pain, sweating, breathlessness or feeling faint can be an emergency: call 112 in Luxembourg.
Otherwise, seek advice if pain worsens, seriously disrupts sleep or does not start improving after about two weeks. Mention persistent tingling, loss of feeling or problems in other joints. These details may change the assessment and the care you need.
How can treatment help?
Care aims to reduce limitations and rebuild useful capacity. It may combine explanation, temporary activity changes and progressive mobility and strengthening exercises. Your physiotherapist helps choose a manageable starting point. Hands-on treatment may complement this work; it does not realign an allegedly displaced shoulder.
A doctor or pharmacist can advise about medicines. An injection sometimes offers temporary relief that makes movement easier, but it does not rebuild a tendon. Decompression surgery has not shown a benefit that justifies routine use for non-torn rotator cuff tendinopathy.
In everyday life
Returning to putting things away
Bring closer
Start with a light object near your body.
Observe
Check your response during the task and the next day.
Build up
Add height or repetitions according to tolerance.
What can you change at home?
Temporarily reduce tasks that cause lasting deterioration without immobilising the whole shoulder. Bring objects closer, share a load between both hands or move frequently used items to an accessible shelf. These adjustments help maintain independence while your tolerance develops.
For sleep, try comfortable support beneath the forearm or a different position. No pillow suits everyone. Heat or cold may offer brief relief with skin protection; avoid these applications if circulation or sensation is impaired. Ask for advice if symptoms remain difficult to manage.
How should exercises begin?
The exercise page explains simple movements and a small starting amount. These are examples to adapt, not a universal programme. Assisted movement may help when lifting the arm alone is difficult; strengthening is then matched to the examination and your goals.
Brief mild discomfort does not necessarily mean tendon damage. Reduce or stop if pain increases substantially, a new symptom develops or your shoulder is worse overall the next morning. Strong pain is not a target to push through just to finish a set.
How long can improvement take?
Progress often develops over weeks or months. Longstanding symptoms, disrupted sleep or demanding work can make recovery less straightforward. A promise that all shoulder tendon problems heal within a few days is not reliable.
Track practical changes: easier dressing, longer sleep or better tolerance of a task. If nothing improves despite suitable care, reassess the explanation and the programme. Repeating the same exercises indefinitely without checking their effect is not the goal.
How can you return to heavier tasks?
Change one demand at a time: weight, reaching height, repetitions or duration. For example, start with a few light objects at chest height before attempting prolonged overhead work. This makes the shoulder’s response easier to understand.
Your physiotherapist can turn this into work or sport goals. Readiness depends on movement, strength and recovery after effort, as well as resting pain. No exercise guarantees that symptoms will never return, but a clear progression can help you manage future demands.
Your questions
Is bursitis always an infection?
No. Many cases involve local irritation. A hot, red shoulder with fever or feeling unwell still needs prompt examination to check for infection and other causes.
Should I keep my arm in a sling?
Prolonged immobilisation is not usually the aim for non-traumatic tendon pain. A sling prescribed after injury or surgery has different instructions: ask before changing them.
Does a normal MRI mean the pain is imaginary?
No. Pain is real even when imaging does not explain everything. Examination and the activities you find difficult remain important when planning care.
Sources and references
- [1] HAS · Épaule douloureuse et coiffe des rotateurs, mise à jour 2026
- [2] AAOS OrthoInfo · Shoulder pain and common shoulder problems
- [3] IQWiG · Schulterschmerzen
- [4] NHS · Shoulder pain
- [5] NHS · Septic arthritis
- [6] NHS · Heart attack
- [7] CGDIS Luxembourg · 112
- [8] NHS Inform · Exercises for shoulder problems
- [9] AAOS OrthoInfo · Shoulder trauma: fractures and dislocations
Text updated on
Medical review: awaiting Hasib Selimovic.