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Where is the calcium deposit?
Rotator cuff tendons connect shoulder blade muscles to the upper arm bone. In calcific tendinopathy, calcium collects within a tendon. This is not a loose piece of broken bone or arthritis transforming the whole joint.
A deposit may be found incidentally on an X-ray taken for another reason. It can also accompany a painful reaction within or around the tendon. Choosing care means relating the image to your symptoms, their course and the examination rather than treating the picture alone.
Understand the picture
A deposit within the tendon
Tendon
It transfers muscle force to bone.
Deposit
Calcium has collected within part of the tendon.
Nearby tissues
Irritation around the tendon can contribute to pain.
Chapter sources [1]
How can a painful episode feel?
Symptoms can build gradually or become very severe over a short period. Lifting the arm, dressing and finding a sleep position may become difficult. The shoulder can feel blocked because movement hurts, without necessarily being a frozen shoulder.
These symptoms are not specific to calcification. Infection, an injury or another condition can also cause severe pain. Even if an older X-ray showed calcium, do not assume it explains a new episode with fever, feeling unwell or unusual associated symptoms.
Why do deposits develop?
The formation and change of a deposit are biological processes within the tendon that are not fully understood. Some deposits change and decrease spontaneously. A period when a deposit changes can be painful; one scan cannot reliably predict its course.
The diagnosis does not prove that you made a wrong movement. It also does not establish excessive calcium intake. Do not remove foods or stop a prescribed treatment solely because of this finding. Discuss any proposed change with the professional responsible for your care.
Which investigations may help?
Examination considers pain location, movement, strength and associated symptoms. An X-ray or ultrasound can identify and locate a deposit. Depending on the findings, the clinician may also investigate a tear, arthritis or another explanation.
Measuring the deposit alone cannot predict pain or treatment success. Ask what the report changes in practice: is the priority controlling a painful episode, restoring movement or reassessing persistent symptoms? Repeated imaging is useful when it answers a meaningful clinical question.
When is prompt medical advice needed?
Sudden severe pain, inability to use the arm or substantial swelling warrants prompt assessment. A red, hot shoulder, fever or feeling generally unwell may suggest infection and should not wait for an exercise or cold pack to help.
Call 112 in Luxembourg for chest pain with breathlessness, sweating or faintness, or another clear emergency. After a fall, changed shoulder shape or new weakness, have an injury assessed even if a calcium deposit is already known.
What can treatment offer?
Initial care may combine activity adjustments, appropriate pain relief and a gradual return to movement. An injection is sometimes discussed for mainly short-term relief; it is not necessary or effective for everyone. Physiotherapy works on function and activity tolerance without promising to dissolve the deposit.
Shockwave treatment and ultrasound-guided lavage need a clear discussion of uncertainty. NICE considers shockwave efficacy evidence inadequate and recommends use in research. A sham-controlled BMJ trial published in 2023 found no superiority of lavage plus steroid over sham treatment at four months.
In everyday life
Choosing a care option
Describe
Separate a recent flare from persistent difficulties.
Compare
Ask what each option offers and what remains uncertain.
Follow up
Assess sleep and activities alongside imaging.
What helps during a very painful period?
Temporarily reduce efforts that provoke strong pain and find comfortable arm support. Ask for medicine advice that takes account of your health and existing treatments. Do not increase doses without appropriate advice simply because the pain is intense.
Heat or cold may offer some comfort when the skin is protected. Avoid these applications with impaired circulation or sensation. Once the episode is better controlled, gradually resume tolerated movement. Relative rest differs from keeping the whole shoulder immobile for a prolonged period.
When should exercises restart?
If almost every movement is severely painful, have the shoulder assessed and the pain addressed first. Forcing a large range or loading the arm is not a way to expel calcium. After assessment, a small assisted movement may be a suitable starting point.
Progress follows the response. Reduce exercises and ask for adjustment if they worsen sleep or leave greater difficulty the next morning. After an injection or specialist procedure, follow the instructions about when and how to restart rather than immediately returning to the general programme.
How long might symptoms last?
An intense flare may settle, but the overall course varies. Some people remain affected for weeks or months. The deposit disappearing on imaging and symptoms improving do not always happen together. An unchanged image therefore does not automatically mean functional treatment has failed.
Consider sleep, dressing and carrying an object as well. Persistent significant pain despite appropriate care may justify specialist review. Surgery is not an inevitable next step whenever an X-ray reveals a deposit.
What should you ask before a procedure?
Ask what benefit is expected for pain and daily activities, what remains uncertain and which adverse effects are possible. Discuss alternatives, restrictions afterwards and how the result will be assessed. Reducing a deposit on a scan is not a sufficient goal by itself.
Explain what you have tried, for how long and with what response. This helps avoid repeatedly adding procedures without reassessment. Options described here are general medical information; they do not mean that the practice offers injections, lavage or shockwave treatment.
Your questions
Is dietary calcium the cause?
The process cannot simply be explained by excessive dietary intake. A deposit alone does not justify removing calcium-containing foods or stopping prescribed treatment.
Can massage break up the deposit?
Massage cannot guarantee that a calcification disappears. Very painful pressure may increase symptoms. Care should follow your symptoms and assessment.
Is shockwave treatment certain to work?
No. Results and protocols vary, and NICE considers efficacy evidence inadequate for routine use. Discuss uncertainty, alternatives and possible effects with the specialist.
Chapter sources [7]
Sources and references
- [1] NHS BNSSG · Calcific tendonitis of the shoulder
- [2] BMJ 2023 · Randomised sham-controlled trial of lavage for calcific tendinopathy
- [3] NHS · Septic arthritis
- [4] NHS · Shoulder pain
- [5] NHS · Heart attack
- [6] CGDIS Luxembourg · 112
- [7] NICE HTG645 · Shockwave therapy for calcific shoulder tendinopathy
- [8] NHS Inform · Exercises for shoulder problems
Text updated on
Medical review: awaiting Hasib Selimovic.