Nerve Blocks & Injections

Subacromial / Subdeltoid Bursa Injections

Anti-inflammatory injection into the subacromial space, relieving shoulder bursitis and rotator cuff impingement to restore comfortable arm movement.

Nerve

Procedure Overview

Shoulder pain that is triggered by arm movement, especially overhead or across the body, is frequently caused by inflammation in the subacromial bursa, a small fluid-filled sac that cushions the space between the rotator cuff and the acromion bone. When it becomes inflamed, every arm movement becomes a source of pain. That inflammation can be treated directly.

Treatment Purpose

These injections deliver corticosteroid and local anesthetic directly into the subacromial space beneath the shoulder's acromion. By reducing bursal inflammation, the injection relieves pain and restores comfortable range of motion, allowing patients to engage more effectively in physical therapy and rehabilitation.

Appropriate Conditions

Subacromial bursitis
Subdeltoid bursitis
Rotator cuff impingement syndrome
Rotator cuff tendinosis
Frozen shoulder
Shoulder pain from overuse or repetitive strain

Patient Considerations

For many patients, yes. Subacromial injections can reduce inflammation enough to allow physical therapy to progress, which in turn addresses the underlying mechanical issues contributing to impingement. Surgery becomes necessary far less often when the inflammatory component of shoulder pain is addressed early and directly.

Treatment Process

The procedure takes 10 to 20 minutes under ultrasound guidance. A thin needle is placed beneath the acromion into the subacromial-subdeltoid bursa and corticosteroid is injected. You return home the same day and are advised to avoid heavy shoulder loading for 2 to 3 days. Physical therapy can generally begin 1 to 2 days after the injection.

Frequently Asked Questions

How many injections can I receive?

Typically no more than 3 to 4 corticosteroid injections per year in the same joint to minimize risks to surrounding tissue.

When can I start physical therapy?

Physical therapy can generally begin 1 to 2 days after the injection once initial soreness subsides.

What are the risks?

Very low risk. Rare complications include infection, tendon weakening with repeated injections, or a temporary pain flare.

Medical disclaimer: This page provides general information and is not medical advice. It does not replace an evaluation by a qualified physician. Talk with a doctor about your specific condition and treatment options. If you are experiencing a medical emergency, call 911.

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