Calcific Tendinitis of the Shoulder

Common Symptoms

• Deep, aching shoulder pain that can flare unpredictably
• Sudden, severe pain during the deposit's more active (resorptive) phase, sometimes described as one of the most painful shoulder conditions
• Pain and stiffness with overhead reaching
• Night pain that disrupts sleep
• Periods of relative calm alternating with flare-ups

Why It Happens

Calcific tendinitis develops when calcium crystals accumulate within a rotator cuff tendon, most commonly the supraspinatus. The exact trigger isn't fully understood, but the process is generally described as passing through phases — a formative phase where the deposit builds (often less painful), a resting phase, and a resorptive phase where the body breaks the deposit down, which is frequently the most painful stage.

Why It Can Become Persistent

Calcific tendinitis follows its own biological timeline — deposits can take months to years to fully resorb on their own — so many people experience symptoms that come and go over a long period rather than resolving quickly, and the shoulder continues to be used for overhead activity throughout, which can aggravate an already irritated tendon.

Who Commonly Gets It

Calcific tendinitis is most common in adults between about 30 and 60, and is seen somewhat more often in women. It is not clearly tied to overuse or a specific occupation or sport the way many other tendinopathies are.

How It Is Usually Diagnosed

A provider evaluates shoulder range of motion, strength, and pain patterns, and diagnosis is confirmed with imaging — X-ray typically shows the calcium deposit directly, and ultrasound can characterize its size, consistency, and phase, which helps guide treatment decisions.

Traditional Treatment Options

• NSAIDs: Used for pain and symptom control, particularly during flare-ups.
• Physical therapy: Range-of-motion and rotator cuff strengthening work, particularly once acute pain has settled.
• Corticosteroid injection: Can help with pain, especially during an acute flare.
• Ultrasound-guided needling/lavage (barbotage): A procedure to aspirate and break up the calcium deposit under imaging guidance.
• Watchful waiting: Because many deposits resorb on their own over time, some cases are managed by monitoring symptoms and deposit changes without invasive treatment, especially if pain is manageable.

Why Someone Might Start Looking for Another Option

The unpredictable, sometimes severe pain of calcific tendinitis — combined with a timeline that can stretch over many months — leads many patients to look for options that might influence the deposit itself, not just mask the pain, especially if barbotage isn't appealing or available.

Where Shockwave Therapy May Fit

Shockwave therapy is one of the more researched non-surgical options specifically for calcific tendinitis of the shoulder, including randomized, sham-controlled trials, with some research describing an association between shockwave therapy and breakdown or resorption of the calcium deposit in addition to pain relief.

How Shockwave Treatment Works for This Area

Acoustic pressure waves are directed at the calcium deposit and surrounding tendon. Research on high-energy shockwave protocols specifically has evaluated both pain/function outcomes and deposit resorption; see What Research Says below for the specific evidence and its limitations.

What the Treatment Feels Like

Treatment directly over an active calcium deposit is often more tender than shockwave therapy elsewhere, since the area is frequently already irritated. Your provider will discuss what to expect and how energy level is adjusted for your comfort and the clinical goal.

What Happens During Your First Visit

Your visit begins with a provider evaluation focused on your history and a physical exam relevant to your complaint. If shockwave therapy is determined to be clinically appropriate, your first treatment can typically be provided the same visit. See our What to Expect page for the full walkthrough.

Who May Not Be Appropriate

• People who have not yet had imaging to confirm and characterize the calcium deposit
• Suspected full-thickness rotator cuff tear, which needs its own evaluation
• Active infection, open wounds, or certain bone conditions at the treatment site
• Certain circulatory, neurological, or bleeding-related conditions, per your provider's screening

This list is not exhaustive. Your provider will screen for contraindications during your evaluation.