Cortisone Injection for Shoulder Pain

Shoulder pain can make simple activities like lifting your arm, reaching overhead, or sleeping comfortably difficult. One common cause is inflammation within the shoulder joint or surrounding tendons and bursae. When rest, medications, and physical therapy are not providing enough relief, a cortisone injection may help reduce pain and improve function.

What Is a Cortisone Injection?

Cortisone is a corticosteroid medication that helps decrease inflammation. In the shoulder, it is commonly injected into areas such as the subacromial space or glenohumeral joint to target the source of irritation directly.

Many injections are performed under ultrasound guidance to improve accuracy and precision, helping ensure the medication reaches the intended area.

Conditions Commonly Treated

Cortisone injections may be used to help manage several shoulder conditions, including:

• Rotator cuff tendinitis
• Shoulder impingement syndrome
• Subacromial bursitis
• Adhesive capsulitis (frozen shoulder)
• Shoulder arthritis

By reducing inflammation, injections can help decrease pain and allow patients to participate more effectively in rehabilitation and daily activities.

What to Expect During the Procedure

The procedure is typically quick and performed in the office setting.

During the injection:

• The skin is cleaned and prepared
• Ultrasound guidance may be used for accuracy
• Medication is injected into the targeted area
• The procedure usually takes about 10–15 minutes

Most patients are able to return home shortly afterward with minimal downtime.

When Does Relief Start?

Pain relief does not always happen immediately. While some patients notice improvement within a day or two, others may take up to a week to experience significant benefit.

Typical timeline:

• Initial soreness for 24–48 hours is possible
• Relief often begins within 2–7 days
• Improvement in pain can help restore shoulder movement and function

Important Things Patients Should Know

Although cortisone injections can be very effective for reducing inflammation and pain, they do not correct structural problems such as tendon tears or advanced arthritis.

They are best viewed as part of a broader treatment plan that may include:

• Physical therapy
• Activity modification
• Home exercises
• Anti-inflammatory strategies
• Other regenerative or orthopedic treatments when appropriate

Repeated steroid injections should also be used carefully, as excessive use may affect tendon and cartilage health over time.

Bottom Line

Cortisone injections are a commonly used, minimally invasive treatment option for shoulder pain caused by inflammation. By reducing irritation and discomfort, they can improve mobility and help patients return to therapy and everyday activities more comfortably.

If shoulder pain is limiting your movement or interfering with daily life, a proper evaluation can help determine whether a cortisone injection may be appropriate for your condition.