How effective is cortisone injection for shoulder osteoarthritis?

The injection places an anti-inflammatory medicine near the painful shoulder joint. Relief can make dressing, reaching, and physiotherapy easier, but the response varies with joint damage, the pain source, and whether the medicine reaches the intended space. Improvement may be temporary, and pain can return as the underlying osteoarthritis continues.

A clinician may first confirm that the shoulder joint is responsible for your symptoms. Pain from the rotator cuff, neck, or nearby tissues can feel similar, so an injection is not a substitute for an assessment. The procedure may also help show whether the joint is contributing to the pain.

Discuss the goal before the injection: short-term comfort, improved movement, or support for rehabilitation. Tell the clinician about diabetes, blood-thinning medicine, infection, allergies, and previous injection reactions. Follow the aftercare instructions, protect the shoulder from strenuous loading initially, and use the period of relief to work on range of motion and strength if advised.

If relief is limited or brief, the next option may involve exercise-based care, pain management, imaging, or another treatment suited to the joint. Repeated injections need individual review because the possible benefits and risks depend on timing and your shoulder’s condition.

Contact a healthcare professional promptly if the injection site becomes increasingly red, hot, swollen, or painful, or if you develop fever or feel unwell. Seek urgent help for severe breathing difficulty, facial swelling, or rapidly worsening weakness. Arrange review if pain does not settle, movement deteriorates, or the shoulder becomes difficult to use after the expected post-procedure period.

Ask which structure is being injected, what improvement is realistic for your daily activities, how the injection fits with physiotherapy, and what alternatives are available if relief is short-lived. Also ask how your medicines or health conditions could affect timing and aftercare.