What Is a Joint Steroid Injection?

A joint steroid injection is a minimally invasive procedure that delivers anti-inflammatory medication directly into a painful joint. The medication typically includes a corticosteroid (to reduce inflammation) and a small amount of local anesthetic (to provide temporary numbing).

Inflammation inside a joint is one of the primary drivers of pain in arthritis, overuse injuries, and degenerative conditions. By placing medication directly into the joint space, we can target the source of inflammation more precisely than with oral medications alone.

These injections are performed using ultrasound or fluoroscopic (x-ray) guidance to ensure accurate placement.

What Conditions Can Be Treated?

Joint steroid injections are commonly used for:

• Osteoarthritis

• Inflammatory arthritis

• Labral irritation (hip, select cases)

• Rotator cuff–related inflammation

• Adhesive capsulitis (frozen shoulder)

• Bursitis

• Post-traumatic joint pain

• Chronic joint inflammation not responding to conservative care

The goal is to reduce inflammation, relieve pain, and improve mobility so that rehabilitation and strengthening can be more effective.

Hip Joint Steroid Injections

The hip joint is deep and surrounded by important structures, which makes image guidance especially important.

Hip injections may help:

• Groin pain from osteoarthritis

• Mechanical stiffness

• Inflammatory flares

• Clarify whether pain is coming from the hip versus the lumbar spine

Because hip arthritis can mimic back pain — and vice versa — a diagnostic injection can sometimes help confirm the primary pain source.

Knee Joint Steroid Injections

The knee is one of the most commonly injected joints due to the high prevalence of osteoarthritis.

Knee injections may help:

• Reduce swelling

• Calm inflammatory flares

• Improve range of motion

• Improve walking tolerance

• Reduce nighttime pain

Relief can occur within several days and may last weeks to months, depending on severity and individual response.

Steroid injections can be particularly helpful when pain is limiting participation in physical therapy or daily function.

Shoulder Joint Steroid Injections

Shoulder injections are commonly used for:

• Glenohumeral osteoarthritis

• Rotator cuff inflammation

• Subacromial bursitis

• Frozen shoulder (adhesive capsulitis)

Reducing inflammation inside the shoulder joint can significantly improve sleep, overhead motion, and participation in therapy.

In some cases, injections are placed into the glenohumeral joint itself. In other cases, the subacromial bursa is targeted depending on the diagnosis.

How the Procedure Is Performed

1. The skin is cleaned and numbed with local anesthetic.

2. Imaging guidance (ultrasound or fluoroscopy) ensures precise needle placement.

3. A mixture of corticosteroid and anesthetic is injected into the joint.

4. A small bandage is applied.

The procedure typically takes 10–20 minutes and is performed on an outpatient basis.

What Should I Expect Afterward?

Immediately after the injection, you may experience:

• Temporary numbness

• Mild pressure sensation

• Short-term relief from anesthetic

Steroid effects typically begin within 2–5 days.

Some patients experience a temporary increase in soreness for 24–48 hours, sometimes called a “post-injection flare.”

How Long Does Relief Last?

Relief duration varies depending on:

• Severity of joint degeneration

• Activity level

• Underlying diagnosis

• Individual inflammatory response

Many patients experience relief lasting several weeks to several months.

Repeat injections may be considered, but frequency is carefully managed to protect long-term joint health.

Benefits of Joint Steroid Injections

• Minimally invasive

• Outpatient procedure

• Targeted anti-inflammatory effect

• Rapid symptom improvement for many patients

• Can delay or reduce need for surgery

• Enhances participation in rehabilitation

Risks and Considerations

Joint injections are generally safe, but potential risks include:

• Temporary increase in pain

• Infection (rare)

• Bleeding

• Temporary elevation in blood sugar (especially in diabetic patients)

• Cartilage effects with frequent repeated injections

Your physician will review your medical history and medications before proceeding.

Who Is a Good Candidate?

Joint steroid injections may be appropriate if you:

• Have persistent joint pain despite conservative treatment

• Have imaging evidence of arthritis or inflammation

• Need pain relief to progress in therapy

• Wish to delay surgical intervention

A detailed evaluation ensures the joint is truly the primary source of pain before injection is recommended.

Reference

American Academy of Orthopaedic Surgeons (AAOS). “Cortisone Shot (Steroid Injection).”
Available at: https://orthoinfo.aaos.org