Medically reviewed by Dr. Tom Biernacki, DPM — Board-Certified Podiatric Surgeon — Balance Foot & Ankle, Howell & Bloomfield Hills, MI. Last updated April 2026.

Corticosteroid injections are one of the most powerful tools in podiatric medicine — but also one of the most commonly misused. At Balance Foot & Ankle, we use injections judiciously and ensure our patients understand exactly what they’re receiving, the realistic benefits, and the risks. Here’s a complete, honest guide.

How Corticosteroid Injections Work

Corticosteroids (steroids) are powerful anti-inflammatory medications. When injected directly into a painful area, they reduce the inflammatory cascade — decreasing prostaglandin production, reducing immune cell infiltration, and decreasing blood vessel permeability. The result is reduced pain and swelling, typically within days to 2 weeks.

Two main preparations used in podiatric practice:

• Triamcinolone acetonide (Kenalog): Intermediate-acting; duration of effect 4–8 weeks; lower cost
• Betamethasone sodium phosphate/acetate (Celestone Soluspan): Short-acting component for rapid onset plus depot component for lasting effect; often preferred for first-time injections

Conditions Commonly Treated with Injections

Plantar Fasciitis

The most common indication. Injections provide rapid pain relief (often 80%+ improvement) but do not address the underlying mechanical cause. Effects last 2–6 months. Risk with repeated injections: plantar fascia rupture (rare but serious) and fat pad atrophy (gradual loss of the heel’s natural cushioning).

Our approach: Inject once if conservative care isn’t providing adequate initial relief; use the pain-free window to rehabilitate aggressively with orthotics and stretching. Consider shockwave therapy or PRP over additional injections for persistent cases.

Morton’s Neuroma

Highly effective — 70–80% of patients experience significant relief from a steroid injection into the affected intermetatarsal space. Can be repeated up to 3 times. Sclerosing alcohol injection series is an alternative for patients who want more permanent relief without surgery.

Bursitis (Retrocalcaneal, Intermetatarsal)

Excellent response. Bursae are ideally suited to corticosteroid injection therapy.

Gout (Acute Attack)

Intra-articular or peri-articular steroid injection can abort a gout attack when oral medications aren’t tolerated or effective.

Ankle and Subtalar Joint Osteoarthritis

Provides 3–6 months of significant pain relief in appropriately selected patients. We use ultrasound guidance for joint injections to ensure accurate placement.

What to Expect During and After an Injection

During

The area is cleaned and sometimes iced for local anesthesia. The injection itself takes 15–30 seconds. A mixture of the steroid and a local anesthetic (commonly lidocaine or bupivacaine) is typically used — the anesthetic provides immediate relief and confirms accurate placement.

24–48 Hours After

A “steroid flare” occurs in 5–10% of patients — a temporary worsening of pain 12–24 hours after injection as the steroid vehicle crystallizes. This resolves within 1–3 days with ice and NSAIDs. It’s not a sign that the injection failed.

2 Weeks After

Maximum benefit of the steroid is typically seen at 2 weeks. Follow-up at this time allows us to assess response and plan next steps.

How Many Injections Are Safe?

This is one of the most common questions — and there’s no universal answer. General guidelines for the foot and ankle:

• Maximum 3 injections at the same site within any 12-month period
• At least 6–8 weeks between injections at the same site
• Plantar fascia: more conservative (1–2 maximum) due to rupture and fat pad atrophy risk
• Joints: 3–4 per year per joint is the general limit

Exceeding these limits significantly increases complication risk without proportionally greater benefit.

Risks of Corticosteroid Injections

• Plantar fascia rupture: Rare but can occur with repeated plantar fascia injections; leads to arch collapse and significant long-term disability
• Fat pad atrophy: Gradual thinning of the heel’s natural cushioning; can be permanent
• Tendon weakening/rupture: Injections near tendons (particularly the Achilles) can weaken tendon tissue
• Post-injection flare: Temporary pain worsening (5–10% of patients)
• Infection: Very rare with proper sterile technique (<0.02%)
• Skin depigmentation: Lightening of skin color at injection site, more visible in darker skin tones
• Blood sugar elevation: Corticosteroids can raise blood sugar 24–72 hours after injection in diabetics

Alternatives to Repeated Steroid Injections

• PRP injections: Promotes tissue healing vs. just reducing inflammation; longer-lasting results; no fat pad atrophy risk
• Shockwave therapy (ESWT): FDA-approved non-invasive treatment; comparable outcomes to surgery for chronic plantar fasciitis
• Hyaluronic acid (HA) viscosupplementation: For joint arthritis; lubricates the joint without steroid risks
• Custom orthotics: Address the mechanical cause rather than just the inflammation

Chronic Pain That Needs More Than an Injection?

Balance Foot & Ankle offers the full spectrum of treatments from cortisone to PRP to shockwave therapy. Howell and Bloomfield Township, MI. Most insurance accepted.

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📞 (810) 206-1402

Related Resources

• Plantar Fasciitis Treatment
• All Foot & Ankle Treatments

What to Know About Cortisone Injections for Foot Pain

Corticosteroid injections provide rapid pain relief for many foot conditions. Our podiatrists use ultrasound guidance for precise placement and optimal results.

View Our Injection Therapy Options | Book Your Appointment | Call (810) 206-1402

Clinical References

1. Grice J, et al. Efficacy of foot and ankle corticosteroid injections. Foot Ankle Int. 2016;37(1):8-12.
2. McMillan AM, et al. Ultrasound guided corticosteroid injection for plantar fasciitis. BMJ. 2012;344:e3260.
3. Brinks A, et al. Corticosteroid injections for greater trochanteric pain syndrome. BMJ. 2011;342:d1399.