Cortisone & Steroid Injections Guide: What to Know Before Your Shot

Cortisone injections are among the most common procedures for joint and soft tissue pain. Millions are performed annually for conditions from knee arthritis to tennis elbow. Yet many patients receive injections without fully understanding what they are, how they work, and what to expect afterward.

This guide explains steroid injections, appropriate uses, realistic expectations, and how to optimize your results.

What Are Cortisone Injections?

The Medication

"Cortisone" is commonly used to describe corticosteroid injections. These are synthetic versions of cortisol, a natural hormone your body produces.

Common injected corticosteroids:

• Triamcinolone (Kenalog)
• Methylprednisolone (Depo-Medrol)
• Betamethasone (Celestone)
• Dexamethasone

Different steroids have varying potency and duration. Your provider selects based on the specific condition and location.

How They Work

Corticosteroids reduce inflammation by:

• Suppressing inflammatory chemical production
• Reducing blood vessel permeability (decreasing swelling)
• Inhibiting inflammatory cell migration to the area
• Decreasing pain signal transmission

Important: Steroids treat inflammation, not the underlying cause. They provide symptomatic relief while you address root problems through therapy, activity modification, or other interventions.

What's in the Injection?

Most injections contain:

• Corticosteroid: The anti-inflammatory medication
• Local anesthetic: Lidocaine or similar for immediate (temporary) pain relief
• Carrier fluid: Saline or other solution

The anesthetic provides immediate relief lasting hours. The steroid takes 2-7 days to reach full effect.

Common Uses

Joint Injections

Knee osteoarthritis: Among the most common applications. Reduces pain and swelling for weeks to months.

Hip arthritis: Often done with imaging guidance (ultrasound or fluoroscopy) due to depth.

Shoulder arthritis/bursitis: Subacromial injection for impingement and bursitis.

Finger/hand joints: Osteoarthritis, trigger finger.

Ankle/foot joints: Arthritis, tarsal tunnel.

Soft Tissue Injections

Tennis elbow (lateral epicondylitis): Controversial—provides short-term relief but may delay long-term healing.

Plantar fasciitis: Heel pad injection when conservative care fails.

Bursitis: Trochanteric (hip), olecranon (elbow), prepatellar (knee).

De Quervain's tenosynovitis: Wrist tendon sheath injection.

Carpal tunnel syndrome: Temporary relief; often bridge to surgery or other intervention.

Spinal Injections

Epidural steroid injection: For radicular pain (sciatica, cervical radiculopathy).

Facet joint injection: For facet-mediated back or neck pain.

Sacroiliac joint injection: For SI joint dysfunction.

Note: Spinal injections require specialized training and guidance. This guide focuses primarily on peripheral injections.

What to Expect

Before the Injection

Preparation:

• Inform provider of blood thinners (may need to stop temporarily)
• Disclose allergies
• Report any signs of infection (fever, redness, drainage)
• Eat normally (no fasting required for most injections)

Discussion:

• Confirm the plan and body part
• Understand expectations for relief
• Review alternatives if applicable
• Ask questions

During the Procedure

Typical process:

1. Skin cleaned with antiseptic
2. Area may be numbed with cold spray or local anesthetic
3. Needle inserted into target area
4. Medication injected (may feel pressure)
5. Needle removed, bandage applied

Duration: Usually 5-15 minutes for the actual procedure.

Pain level: Brief sharp sensation during needle insertion. Injection itself may cause pressure or mild discomfort. Most patients tolerate well.

Guidance options:

• Palpation (feeling landmarks)
• Ultrasound guidance (seeing needle in real-time)
• Fluoroscopy (X-ray guidance, common for spine)

After the Injection

Immediately after:

• May have numbness from local anesthetic (hours)
• Can usually drive yourself home
• Resume normal activities same day (with some exceptions)

First 24-48 hours:

• Pain may temporarily increase ("steroid flare")
• Ice can help
• Rest the area moderately

Days 2-7:

• Steroid effect begins
• Progressive improvement expected
• Full effect usually by 1 week

Managing the "Steroid Flare"

What Is It?

About 10-20% of patients experience temporary pain increase 24-48 hours after injection. This "flare" results from steroid crystals irritating tissues before dissolving.

How to Manage

Ice: 15-20 minutes several times daily

Rest: Relative rest of the injected area

Over-the-counter pain relief: Acetaminophen or NSAIDs if allowed

Patience: Typically resolves within 2-3 days

When to Call Your Provider

• Fever over 101°F
• Increasing redness, warmth, or swelling
• Drainage from injection site
• Pain dramatically worsening after day 3
• Signs of allergic reaction

Exercise After Injection

General Guidelines

First 24-48 hours:

• Rest the injected area
• Gentle movement okay
• Avoid strenuous activity

Days 2-7:

• Gradually resume normal activities
• Begin gentle stretching
• Monitor for pain response

After 1 week:

• Resume full exercise as tolerated
• Use pain as guide
• This is the window to progress rehabilitation

Why Timing Matters

The injection reduces inflammation, creating a window of opportunity. Use this time to:

• Progress physical therapy
• Address underlying movement issues
• Build strength that was limited by pain
• Improve flexibility

Don't: Simply rest and wait for the injection to "fix" the problem. Active rehabilitation optimizes outcomes.

Sport-Specific Considerations

Runners: Resume easy running when walking is pain-free, typically 3-7 days.

Weightlifters: Avoid heavy loading of injected area for 1-2 weeks. Light movement okay earlier.

Team sport athletes: Return to practice when comfortable, typically 5-10 days for joint injections.

Note: Some organizations have rules about steroid injections and competition. Check applicable regulations.

How Long Do Effects Last?

Typical Duration

Joint injections for arthritis: 3-6 months average. Some get less, some more.

Soft tissue injections: Variable—weeks to months.

Spinal injections: Often weeks to months; varies significantly.

Factors Affecting Duration

Longer-lasting relief more likely with:

• Earlier-stage arthritis
• First injection (vs. repeat)
• Concurrent rehabilitation
• Less severe underlying condition
• Appropriate activity modification

Shorter-lasting relief more likely with:

• Advanced degeneration
• Multiple prior injections
• Continued aggravating activities
• Underlying condition progression
• No concurrent rehabilitation

Repeat Injections

Most providers limit injections to:

• 3-4 per joint per year
• Minimum 3 months between injections

Why limitations?

• Repeated steroids may damage cartilage
• Diminishing returns with frequent injections
• Risk of tendon weakening with repeated soft tissue injections
• Sign that other treatment needed

Risks and Side Effects

Common (Usually Mild)

Steroid flare: Temporary pain increase (10-20%)

Skin changes: Lightening or dimpling at injection site, especially with superficial injections

Facial flushing: Temporary redness, warmth (more common in women)

Blood sugar elevation: Temporary in diabetics—monitor closely

Menstrual irregularity: Temporary changes possible

Uncommon but Important

Infection: Rare with proper technique (<1 in 10,000). Signs: fever, increasing redness/warmth, drainage.

Tendon rupture: Risk with repeated tendon-area injections. Avoid direct tendon injection.

Post-injection flare: Severe flare rarely requires additional treatment.

Allergic reaction: Rare but possible.

Long-Term Concerns

Repeated joint injections:

• Some evidence of accelerated cartilage loss with frequent injections
• Benefits may decrease with repetition
• Consider alternative treatments if needing frequent injections

Systemic effects:

• Usually minimal with occasional injections
• More concern with frequent or multiple-site injections
• Adrenal suppression possible with very frequent use

When Injections Are Not Appropriate

Contraindications

Absolute:

• Infection in or near injection site
• Known allergy to injection components
• Septic joint (infected joint)
• Skin breakdown over injection site

Relative:

• Poorly controlled diabetes (blood sugar effects)
• Blood thinners (may need to adjust)
• Immunocompromised state
• Prior poor response to same injection

When to Consider Alternatives

• Three or more injections without lasting benefit
• Underlying problem requires different intervention
• Surgery indicated regardless
• Patient preference
• Young athletes (growth plate concerns in children)

Alternative Injections

Hyaluronic Acid (Viscosupplementation)

What: Gel-like substance injected into joints, often knees.

Purpose: Lubrication and cushioning.

Duration: May last 6+ months.

Evidence: Mixed. Some patients report significant benefit; studies show modest effects overall.

Best for: Mild-moderate knee osteoarthritis, especially when steroids provide short-lived relief.

Platelet-Rich Plasma (PRP)

What: Concentrated platelets from your own blood.

Purpose: Stimulate healing response.

Evidence: Promising for some tendon conditions; still being studied.

Cost: Usually not covered by insurance ($500-2000+).

Best for: Tendinopathies, potentially early arthritis.

Prolotherapy

What: Irritant solution (often dextrose) injected to stimulate healing.

Evidence: Limited and mixed.

Cost: Usually not covered by insurance.

Stem Cell/Regenerative Injections

What: Various cell-based preparations claiming regenerative effects.

Evidence: Early stage; substantial marketing exceeds current evidence.

Cost: Often very expensive ($3000-10,000+), not covered by insurance.

Caution: Be wary of clinics making dramatic claims.

Maximizing Injection Benefits

Before the Injection

1. Have realistic expectations: Relief, not cure
2. Plan rehabilitation: Schedule PT if appropriate
3. Identify aggravating factors: What will you modify?
4. Prepare home exercise program: Ready to progress?

After the Injection

1. Follow post-injection instructions: Rest, ice, activity guidelines
2. Use the window: Progress therapy during pain relief period
3. Address root causes: Don't just mask symptoms
4. Track response: Document pain levels, function, duration
5. Communicate with provider: Report outcomes for future planning

Long-Term Strategy

Injections work best as part of comprehensive management:

• Physical therapy and exercise
• Activity modification
• Weight management if applicable
• Biomechanical assessment
• Consideration of surgery if appropriate

Questions to Ask Your Provider

1. What exactly is being injected and where?

2. What's the expected benefit and duration?

3. What are the alternatives?

4. How many injections have I had in this area?

5. What should I do/avoid after the injection?

6. When should I follow up?

7. What if it doesn't work?

8. How does this fit into my overall treatment plan?

Conclusion

Cortisone injections can provide valuable relief for joint and soft tissue pain, creating opportunities for rehabilitation and improved function. They're most effective as part of comprehensive treatment—not as standalone solutions.

Understand what injections can and cannot do. Use the relief period productively. Work with your healthcare team to address underlying issues. And know when repeated injections signal the need for alternative approaches.

With appropriate expectations and active participation in your care, steroid injections can be a useful tool in managing musculoskeletal conditions.