Why Cortisone Shots Stopped Working for Your Heel Pain

You had a cortisone shot in your heel. Maybe it worked for a few months. Maybe it barely worked at all. Now the pain is back — sometimes worse than before — and your doctor wants to do another one.

You’re wondering if it’s still safe. Whether it’s actually fixing anything. And what happens when it stops working entirely.

A quick note on terminology before we go further. “Cortisone” is the patient-facing word, but what’s actually injected today is almost always a synthetic corticosteroid — triamcinolone, methylprednisolone, or dexamethasone. They’re different molecules with different durations and tissue effects, but they share a category. For clarity, we’ll use “cortisone” throughout — but know that what’s going into your heel is one of these specific agents.

I’ve spent 30+ years as a board-certified foot and ankle surgeon, with more than 40,000 patients treated at Marble Falls Podiatrist. I’ve used corticosteroid injections selectively for decades. Here’s the honest picture of what they do, when they work, when they stop working, and why the answer is almost never “another shot.”

What cortisone actually does in your heel

When you have plantar fasciitis or related heel pain, the immediate problem is inflammation — swollen, irritated tissue around the plantar fascia, the fat pad, or the heel bone insertion. Cortisone is a powerful anti-inflammatory. Injected into the right location, it suppresses that inflammation quickly and reduces pain — sometimes within days.

That’s what makes it appealing. Fast relief, in-office procedure, covered by insurance, back to work the same afternoon.

But cortisone doesn’t heal anything. It quiets the body’s inflammatory response — and inflammation, in moderation, is part of how tissue actually repairs itself. The shot reduces the symptom while the underlying problem keeps going.

That’s why the relief is temporary. And it’s why repeat injections give diminishing returns.

Why your first shot worked — and the next one didn’t

The first cortisone shot you got probably gave meaningful relief. Maybe weeks, maybe months. That’s normal.

The second shot gave less relief, for less time.

The third gave less still.

This pattern is well-documented in the foot and ankle literature, and it’s mechanical, not psychological. There are a few reasons:

• The plantar fascia tissue itself changes with repeated steroid exposure. It thins, weakens, and loses its normal elasticity. The tissue that’s supposed to absorb your bodyweight on every step becomes less capable of doing that job.
• The fat pad under your heel — your natural shock absorber — atrophies with repeat steroid injections. Less cushion means more pain even when inflammation is suppressed.
• The mechanical cause that gave you plantar fasciitis in the first place — overpronation, tight calves, inadequate arch support, a job that keeps you standing all day — has not been addressed. The cortisone never touched it.

So the inflammation comes back. And each time it comes back, the tissue is a little less resilient than it was before.

The risks of repeat injections

Cortisone is not a benign treatment. With repeated use in the heel, the documented risks include:

• Plantar fascia rupture. The tissue weakens with steroid exposure, and a sudden movement on a thinned fascia can tear it completely. This is a major injury that often requires months of recovery.
• Fat pad atrophy. Once the heel pad is thinned, it does not regenerate. You’re walking on less cushion for the rest of your life — a permanent change.
• Skin discoloration and tissue thinning at the injection site.
• Elevated blood sugar — particularly relevant if you’re diabetic or pre-diabetic.
• Local infection — rare, but serious.
• Temporary worsening of pain in the first 24–72 hours (the “cortisone flare”).

Most experienced foot and ankle specialists limit cortisone injections in the heel to no more than two or three in a lifetime in a single location — and many of us prescribe far fewer. If you’ve already had three shots, more injections in the same spot are typically off the table.

Why your heel pain keeps coming back

If cortisone isn’t healing your plantar fasciitis, what is the actual problem?

In almost every case, plantar fasciitis is a mechanical condition. The plantar fascia — the dense band of tissue running from your heel to the ball of your foot — gets overloaded. The overload is usually caused by overpronation (the foot rolls inward too much during walking), a tight Achilles tendon and calf complex, inadequate arch support, a sudden increase in standing or walking, weight gain over time, or poor footwear — including some over-the-counter “comfort” inserts that don’t address the underlying mechanics.

Until the mechanical overload is corrected, the tissue keeps getting reinjured. Cortisone quiets the symptom. The cause continues. The pain comes back.

What actually heals plantar fasciitis

The protocol that gets most plantar fasciitis patients durably out of pain is built around three components:

1. Correcting the mechanical cause. A custom medical orthotic engineered specifically for your foot — not an over-the-counter insert, not a Good Feet Store product, not a “comfort” orthotic — redistributes load away from the inflamed fascia. The right orthotic is the foundation. Inserts you buy off the shelf usually aren’t the right match for medical heel pain, and patients who try them often feel worse, not better. That’s not your fault — they’re comfort products, not medical orthotics. A medical orthotic, when made correctly, lasts 15–20 years with periodic tune-ups.
2. Helping the tissue actually heal. This includes shockwave therapy and Class IV laser, both of which support tissue repair without the destructive effects of steroid. Advanced Restorative Therapies — targeted injection-based treatments that support healing of the fascia and surrounding soft tissue rather than suppressing inflammation — are available for select cases where the conservative protocol needs additional support.
3. Addressing the contributing factors. Targeted stretching for the calf and plantar fascia, footwear modification, activity modification where realistic, and treatment of any co-existing conditions putting extra load on the heel.

Most plantar fasciitis patients who follow this non-surgical heel pain protocol are out of significant pain within 8–12 weeks. The relief is durable because the cause has been addressed.

When cortisone still has a role

Cortisone is a tool. It’s not the primary pillar of plantar fasciitis treatment, but it’s not banished from the toolkit either.

We use cortisone selectively — when a patient needs short-term symptom relief to begin the conservative protocol (you can’t tolerate orthotic break-in if you can barely stand), when a specific anatomical inflammation responds particularly well, or when a patient has a defined, time-limited event — a wedding, a planned trip — and needs functional relief to get through it.

We don’t love prescribing it, and patients really don’t love receiving it — the injection itself is uncomfortable. When we do use it, it’s once or twice, paired with the actual healing protocol, not as a standalone fix.

What to do if your shots have stopped working

If you’ve had multiple cortisone injections in your heel and you’re considering another one, pause first.

A comprehensive heel pain evaluation at Marble Falls Podiatrist takes about an hour and includes a full history and goals review, biomechanical evaluation, in-office digital X-rays reviewed with you on-screen, diagnostic ultrasound — particularly important if there’s any concern about plantar fascia thinning or partial tear from prior steroid exposure — orthopedic strapping/taping as a diagnostic test that predicts how well a custom orthotic and the full protocol will perform, and an honest, spoken-out-loud assessment of what your tissue actually looks like and what the realistic path forward is.

You leave with a complete picture of your options — surgical and non-surgical — and the time to make the decision that’s right for you.

We see patients from across the Highland Lakes and Hill Country, including Lakeway, Bee Cave, Spicewood, Lago Vista, Dripping Springs, Cedar Park, and the surrounding Austin area. If you’ve already been told you need heel surgery, a second opinion on recommended foot surgery is the right next step before you commit. You can also explore the full range of foot and ankle conditions we treat.

The bottom line

Cortisone shots that stop working are a signal — not that you need a stronger shot, but that the underlying mechanical cause of your heel pain has never been treated. The treatment that addresses the cause is durable. The shot that suppresses the symptom is not.

You don’t have to live with heel pain. And you almost certainly don’t need another injection — or surgery — to get rid of it.