What to expect from a cortisone injection for calcific tendinitis

Calcific tendinitis commonly involves calcium collecting within a shoulder tendon and can cause pain, stiffness and difficulty raising the arm. The clinician uses the examination and imaging findings to decide whether an injection is suitable and where it should go. Cortisone reduces local inflammatory activity; it does not remove the deposit or guarantee that shoulder movement will return immediately. Pain can briefly increase after the needle, then improve over several days. Other options may be discussed if the deposit continues to limit function.

Tell the clinician about diabetes, medicines that affect bleeding, allergies, infection and previous injections. Keep activity light according to the instructions, avoiding heavy overhead work while the shoulder is sore. Gentle movement can help prevent guarding, but do not force a painful range. Once symptoms allow, physiotherapy can work on shoulder mobility, tendon loading and control of the shoulder blade. Keep track of pain, sleep and arm function rather than judging progress by one painful day.

Seek prompt advice for increasing warmth, redness, swelling, drainage, fever or severe pain at the injection site. Urgent assessment is needed for sudden major weakness, a new loss of sensation, breathing difficulty or facial swelling. Arrange follow-up if pain remains limiting, the arm becomes progressively stiffer, or symptoms return quickly; the deposit and other shoulder structures may need reassessment.

Is the deposit visible on my imaging, and where will the injection be placed? What treatment addresses the calcium itself if needed? Which shoulder movements are safe now? When should physiotherapy begin, and what change would prompt review?