The resorptive phase is the most painful phase of calcific tendonitis.
During this stage, the body begins breaking down and reabsorbing the calcium deposit in the rotator cuff tendon. This triggers significant inflammation, swelling and sharp shoulder pain.
An ultrasound-guided cortisone injection can help settle this inflammation quickly and effectively.
Understanding the Phases of Calcific Tendonitis
Calcific tendonitis typically progresses through three stages:
1️⃣ Formative Phase
Calcium deposits begin forming in the rotator cuff tendon.
- Often mild or no symptoms
- Gradual stiffness may occur
2️⃣ Resorptive Phase (Most Painful)
This is the stage where pain peaks.
- The body attempts to break down the calcium deposit
- Intense inflammation develops
- Pressure builds within the tendon
- Severe shoulder pain occurs
Patients commonly experience:
- Sudden onset of sharp pain
- Difficulty lifting the arm
- Night pain disrupting sleep
- Pain radiating down the upper arm
- Marked restriction in movement
This phase can feel dramatic and alarming, even though it is part of the natural healing process.
3️⃣ Post-Calcific (Healing) Phase
Inflammation gradually settles.
- Pain reduces
- Movement improves
- Calcium deposit may shrink or disappear
Why Is the Resorptive Phase So Painful?
During this phase:
- The calcium deposit becomes soft and toothpaste-like
- Increased pressure develops inside the tendon
- The subacromial bursa becomes inflamed
- Surrounding tissues swell
This combination leads to intense inflammatory shoulder pain.
How Is the Pain Treated?
The most effective treatment during the painful resorptive phase is reducing inflammation.
At Alton Pain Clinic, we offer:
Ultrasound-Guided Cortisone Injection
A cortisone injection for calcific tendonitis works by:
- Reducing inflammation in the subacromial space
- Settling irritation around the rotator cuff
- Relieving swelling and pressure
- Improving shoulder movement
Ultrasound guidance ensures:
- Accurate needle placement
- Safer delivery of medication
- Better clinical outcomes
Many patients notice improvement within 3–7 days, with maximum benefit within two weeks.
Can the Pain Settle on Its Own?
Yes, eventually. However, the resorptive phase can be extremely painful and may last weeks without treatment. Early intervention with a shoulder cortisone shot can significantly reduce suffering and speed up recovery.
Who Should Consider Treatment?
You may benefit from an ultrasound-guided shoulder injection if you experience:
- Severe calcific tendonitis shoulder pain
- Night pain
- Sudden worsening symptoms
- Restricted arm movement
- Imaging-confirmed calcium deposit
Frequently Asked Questions
Which stage of calcific tendonitis hurts the most?
The resorptive phase is the most painful stage.
Why does pain suddenly worsen?
Because the body is breaking down the calcium deposit, causing inflammation.
How long does the painful phase last?
It can last several weeks but varies between individuals.
Can a cortisone injection help?
Yes, it reduces inflammation and can significantly relieve pain.