Last updated: August 30, 2026 | By Richard Hale
A cortisone shot is one of the most common recommendations doctors make for a stubborn, painful joint, and it is also one of the most misunderstood. Some people expect it to fix the underlying problem. Others avoid it entirely because they have heard it “eats away at cartilage.” Neither picture is complete.
This guide breaks down exactly what a cortisone injection does inside the joint, how much relief you can realistically expect and for how long, the frequency limits doctors follow and why, and what the shot cannot do no matter how well it works in the short term. By the end, you will have a clear framework for deciding whether it is worth bringing up at your next appointment.
This content is for educational purposes only and is not medical advice. Cortisone injections are a medical procedure that requires a diagnosis, a licensed provider, and a plan tailored to your specific joint and health history. Nothing here should replace a conversation with your doctor about your own case.
Table of Contents
- What Is a Cortisone Shot and How Does It Work
- When Is a Cortisone Shot Indicated
- The Real Benefits, With a Timeline
- Risks and Frequency Limits You Should Know
- What a Cortisone Shot Doesn’t Do
- Complementary Alternatives Worth Knowing
- How to Decide If It’s Worth Discussing With Your Doctor
- Frequently Asked Questions
What Is a Cortisone Shot and How Does It Work
A cortisone shot is an injection of a corticosteroid, a lab-made version of a hormone your body already produces, placed directly into or around a joint to calm inflammation. Most injections combine the steroid with a fast-acting local anesthetic, so you get some numbing relief within hours while the steroid itself takes a few days to start working.
According to the American Academy of Orthopaedic Surgeons, the steroid is deposited on the lining of the joint, where it interacts with cells there to reduce swelling and irritation over the following days. This is different from a hyaluronic acid, or “gel,” injection, which adds lubrication to the joint rather than targeting inflammation directly, a distinction covered in more depth in our guide to hyaluronic acid for joint pain.
Cortisone shots are commonly used in knees, shoulders, hips, and smaller joints like the thumb or elbow, and they are usually given as one part of a broader treatment plan rather than a standalone fix.
When Is a Cortisone Shot Indicated
A cortisone shot is typically considered when joint pain, most often from osteoarthritis, tendinitis, or bursitis, has not responded well enough to rest, over-the-counter anti-inflammatories, or an initial round of physical therapy. It is usually a middle step, not a first-line or last-resort treatment.
Doctors also reach for it when pain is limiting a person’s ability to participate in physical therapy or exercise, since calming the pain enough to move the joint properly can make the rest of a rehab plan far more productive. This comes up often for adults managing joint pain in your 50s, where a flare can stall progress on strength and mobility work for weeks at a time.
It is generally not the first thing tried for a brand-new injury, and providers are cautious about using it for tendinitis specifically, since steroids can weaken tendon tissue rather than help it heal.
The Real Benefits, With a Timeline
The main benefit of a cortisone shot is a meaningful drop in inflammation and pain that gives you a window to move, exercise, and rehab the joint more comfortably. It is not a treatment you take and then rest indefinitely, the point is to use the relief productively.
Here is a realistic timeline based on how these injections typically behave:
- Hours 1 to 72: The local anesthetic mixed into the shot provides quick, temporary numbing. This early relief is not the cortisone working yet, and it sometimes fades before the steroid effect kicks in, which can feel discouraging if you don’t expect it.
- Days 3 to 7: The corticosteroid itself starts reducing inflammation in the joint lining, and many people notice pain easing meaningfully during this window.
- Around 2 weeks: Relief commonly reaches its peak, with reduced swelling and improved comfort during daily movement.
- Weeks 6 to 12: For many people, especially with knee or shoulder injections, this is where meaningful relief tends to fade for chronic conditions like osteoarthritis.
- Up to roughly 24 weeks: Some people, particularly with an acute flare rather than ongoing degenerative arthritis, report benefits lasting several months. There is no reliable way to predict in advance how long a given injection will last for a given joint.
Cost is generally $100 to $300 for the injection itself without insurance, and many health plans cover part or all of it when the injection is deemed medically necessary, often bringing out-of-pocket cost down to $20 to $50.
Risks and Frequency Limits You Should Know
Most providers cap cortisone injections at 3 to 4 per year in a given joint, with at least 3 months between injections, because repeated use carries real risks that go up with frequency. This is not an arbitrary rule, it reflects what happens to joint tissue with repeated steroid exposure.
The main risks with repeated use include:
- Cartilage damage: Corticosteroids have a negative effect on chondrocytes, the cells that maintain a smooth joint surface, which can accelerate the progression of arthritis over time. A two-year study published in JAMA followed adults with knee osteoarthritis receiving injections every three months and found the steroid group lost about twice as much cartilage as the placebo group, with no clinically meaningful long-term pain advantage over placebo.
- Tendon weakening: Cortisone can weaken tendons and ligaments near the injection site, raising the risk of a tear or rupture, which is part of why it is used cautiously for tendinitis.
- Infection: There is a small but real risk of joint infection with any injection, which is why sterile technique matters.
- Blood sugar spikes: A small amount of the steroid escapes into the bloodstream and can temporarily raise blood sugar, which matters for anyone managing diabetes and is worth flagging to your doctor beforehand.
- Less common effects: With frequent or high-dose use, some people experience thinning of nearby bone, elevated blood pressure, fluid retention, or temporary mood changes.
None of this means an occasional cortisone shot is dangerous for most people, it means the frequency limits exist for a real reason and are worth respecting rather than pushing past because a joint “just needs one more.”
What a Cortisone Shot Doesn’t Do
A cortisone shot does not repair cartilage, reverse arthritis, or heal a torn tendon. It is a palliative tool that reduces inflammation and pain, it has no regenerative or curative properties for the joint tissue itself.
This distinction matters because the real long-term progress against joint pain, rebuilding strength, improving range of motion, correcting movement patterns, happens through physical therapy and consistent exercise, not through the injection. The shot’s job is to open a window where that work is possible without as much pain getting in the way.
Research backs this up directly. A large randomized trial published in JAMA and summarized by Harvard Health found that steroid injections given every three months over two years produced no clinically significant pain benefit compared to placebo, while accelerating cartilage loss. The takeaway is not that cortisone is useless, short-term relief can be real and valuable, but that it should never be mistaken for a solution to the underlying joint problem.
Complementary Alternatives Worth Knowing
Cortisone shots work best as one piece of a broader plan, not a replacement for the approaches that address the joint itself. A few options are worth knowing about, whether alongside an injection or instead of one.
Physical Therapy and Targeted Exercise
Strengthening the muscles around a joint is the closest thing to a durable fix that exists for most chronic joint pain, since stronger supporting muscles take pressure off the joint surface itself. Our guide to exercises to strengthen knees with arthritis walks through the specific movements physical therapists actually use.
Heat and Cold Therapy
Simple, low-risk, and genuinely useful for managing day-to-day flares between other treatments. Timing matters more than most people realize, our breakdown of heat or ice for joint pain covers when to use each one.
Bracing and Compression
External support can reduce strain on a painful joint during activity without any of the risks tied to injections. See our comparison of a knee sleeve vs a knee brace for help choosing the right level of support.
Red Light Therapy and Other At-Home Devices
A newer category of home devices claims to reduce joint inflammation without a needle involved. The evidence is still developing, our look at red light therapy for joint pain covers what the research does and doesn’t support so far.
Flare Management
Learning how to manage a bad flare day without automatically reaching for a bigger intervention is a skill worth building on its own. Our guide to managing an arthritis flare at home covers the practical steps.
How to Decide If It’s Worth Discussing With Your Doctor
A cortisone shot is worth bringing up with your doctor if joint pain has stuck around for weeks despite rest and basic home care, or if pain is actively preventing you from doing the physical therapy or exercise that would otherwise help. It is a reasonable question to ask, not a decision to make on your own.
A few signs it is a conversation worth having sooner rather than later:
- Pain has lasted more than a few weeks and is not improving with rest, ice, or over-the-counter medication
- Pain is limiting your ability to do prescribed physical therapy exercises
- You have already had a diagnostic workup and know what is causing the pain, rather than guessing
- You understand it is a short-term tool and have a plan for what happens after the relief fades
And a few reasons to bring it up carefully, or ask more questions first:
- You have already had 3 to 4 injections in that joint within the past year
- The pain is in a tendon rather than the joint itself
- You have diabetes and have not discussed blood sugar monitoring around the injection
- The pain is new, sudden, or came with swelling, redness, or fever, which needs to be evaluated before any injection is considered
If joint pain is showing up alongside back pain or seems to be spreading, it is also worth reading our guide on when to see a doctor for back pain, since the decision framework for when a symptom needs professional evaluation rather than home care follows similar logic across joints.
Frequently Asked Questions
How long does a cortisone shot last for joint pain?
Relief typically peaks around the two-week mark and commonly lasts six to twelve weeks for chronic conditions like osteoarthritis, though some people report benefits for up to roughly six months, especially for an acute flare rather than ongoing degeneration. There is no reliable way to predict the exact duration for your specific joint in advance.
How many cortisone shots can you get in a year?
Most providers set a practical limit of 3 to 4 cortisone shots per year in a given joint, with at least 3 months between injections. This limit exists because repeated use raises the risk of cartilage damage and tendon weakening, not because of any strict regulatory rule.
Does a cortisone shot hurt?
Most people describe brief pressure or a pinch rather than significant pain, and the injection itself takes only a minute or two. Many providers use a local numbing agent or spray beforehand, and the area may feel sore for a day or so afterward before the steroid effect begins.
Can a cortisone shot make joint pain worse over time?
Used occasionally and within recommended limits, cortisone is not expected to worsen your pain. However, research shows that frequent, repeated injections over years can accelerate cartilage loss in the joint, which is a separate concern from short-term pain relief and part of why frequency limits matter.
Does insurance cover cortisone shots?
Many health insurance plans cover cortisone injections when they are considered medically necessary, which can bring the out-of-pocket cost down to roughly $20 to $50 from the $100 to $300 typical cash price. Coverage details vary by plan, so it is worth confirming with your insurer beforehand.
Is a cortisone shot the same as a hyaluronic acid injection?
No, they work differently. A cortisone shot reduces inflammation and tends to act faster but wear off sooner, while a hyaluronic acid, or gel, injection adds lubrication to the joint and often takes longer to take effect but can last longer for some people. Our guide to hyaluronic acid for joint pain explains the differences in more detail.
Can people with diabetes get a cortisone shot?
Often yes, but it requires extra care. Cortisone can temporarily raise blood sugar because a small amount of the steroid escapes into the bloodstream, so anyone with diabetes should monitor blood sugar closely for a few days afterward and discuss timing with their doctor.
Does a cortisone shot cure arthritis or joint damage?
No. A cortisone shot reduces inflammation and pain, but it does not repair cartilage, reverse arthritis, or heal joint damage. It is a tool to manage symptoms and create room for physical therapy and exercise to do the longer-term work.
The Bottom Line
A cortisone shot is a genuinely useful tool for calming a painful joint enough to move it, exercise it, and get real value out of physical therapy, but it is not a cure and it is not meant to be used indefinitely. Understanding the realistic timeline, the frequency limits, and what it can’t do puts you in a much stronger position to have a focused, useful conversation with your doctor rather than treating it as a quick fix or avoiding it out of an unclear fear of “damaging” the joint.
If you’re weighing a cortisone shot as one option among several, our guides to managing an arthritis flare at home and heat or ice for joint pain are good next steps for building out the rest of your plan.
About the author: Richard Hale is an independent health writer focused on mobility, joint health, and active aging research. He is not a licensed medical professional. All content on VitalMove40 is for educational purposes only and is not a substitute for advice from a qualified healthcare provider.
