Image-Guided Corticosteroid Shoulder Injections

Evidence: Conditional option. A corticosteroid injection can reduce inflammation-related pain for a period of time. Benefit is usually temporary and depends on matching the medication to the correct target and goal.

Targets treated at Elite Pain & Health

• Glenohumeral joint for selected arthritis, frozen shoulder, or joint pain
• AC joint for selected painful arthritis or injury
• Subacromial bursa, also called the subacromial–subdeltoid bursa, for selected subacromial pain and bursitis

All shoulder injections are performed with image guidance. Glenohumeral and AC joint injections use ultrasound or fluoroscopy, selected according to the case. A subacromial–subdeltoid bursa injection uses ultrasound. The injection may also contain local anesthetic depending on the clinical plan.

What the injection can and cannot do

The main purpose is symptom relief. Reduced pain may help you sleep, move, and participate in physical therapy. A corticosteroid does not reattach a torn rotator cuff or rebuild lost joint cartilage.

For rotator cuff-related pain, the AAOS guideline supports that a single corticosteroid and local-anesthetic injection can improve pain and function in the short term.

Repeat injections are individualized

Corticosteroid injections are not scheduled as an automatic series. A repeat may be considered after meaningful benefit from the prior injection and is generally separated by at least three months. Before repeating, the clinician reassesses the diagnosis, rehabilitation plan, cumulative exposure, tendon health, and possibility of surgery.

Risks and tradeoffs

Possible effects include a temporary pain flare, facial flushing, skin color or fat change near the injection, higher blood sugar, bleeding, infection, allergic reaction, and injury to nearby tissue. Tendon and cartilage concerns become more important with repeated exposure or certain targets.

Diabetes and blood glucose

Corticosteroid can temporarily raise blood glucose. Patients with diabetes should monitor glucose closely for at least 48 hours and continue until it returns to their usual range, which may take up to seven days. Follow your diabetes plan and contact the appropriate clinician for readings outside your instructed range. If glucose has not returned to your usual range by seven days, contact the clinician managing your diabetes or the procedural care team.

Planned shoulder surgery

Tell the care team about any planned shoulder surgery before receiving a corticosteroid injection. Injections are avoided within three months before shoulder replacement and within one month before other shoulder surgery, with timing coordinated with the operating surgeon.

Also tell the care team about infection, immune suppression, blood thinners, allergies, and pregnancy. Do not stop prescribed medication without coordinated instructions.

After the injection

Follow the procedure-specific instructions from the care team. Track changes in sleep, reaching, dressing, and therapy participation—not only the pain number. A useful response should help clarify the next step. If pain repeatedly returns, the overall diagnosis and rehabilitation plan should be reassessed.

Call the clinic for worsening redness, drainage, fever, progressive swelling, new weakness or numbness, or pain that is severe and unexpected. Emergency symptoms require emergency care.

Sources

• AAOS 2025 Clinical Practice Guideline: Rotator Cuff Injuries
• AAOS OrthoInfo: Frozen Shoulder
• AAOS: Glenohumeral Osteoarthritis Guideline

Suitability, medication choice, number of injections, and timing are individualized. This page does not provide procedural instructions.