Cortisone injections calm inflammation quickly and offer short-term pain relief. PRP injections use growth factors from your own blood to support tissue healing over a longer timeline. Cortisone works fast but fades. PRP works more slowly but aims to help the tissue recover. The right choice depends on your joint, your health history, and your goals.
This guide, explains how each option works and who tends to benefit. Joint injections are part of our Sports Medicine care and support the whole-body primary care we have provided to families across St. Petersburg since 2017. In our office, Dr. Kathryn Syed, MD, who is board certified in Family Medicine, and Madeline Caffrey, PA-C, evaluate joint pain alongside each patient’s full medical picture.
What Are Cortisone Injections?
Cortisone is a corticosteroid. It is a manufactured version of a hormone your body makes to control inflammation. A cortisone shot delivers this anti-inflammatory medicine directly into a painful joint or the tissue around it. Our team offers image-guided corticosteroid injections for the knee, shoulder, hip, and other joints when conservative care needs reinforcement.
What Is a PRP Injection?
PRP stands for platelet-rich plasma. It is made from your own blood and concentrated so it holds more platelets and growth factors than normal blood. Your body already uses these growth factors to repair tissue. Our PRP Therapy places them where healing has stalled. Because PRP comes from you, there is no added medication in the injection.
How Each Treatment Works for Joint Pain and Inflammation
How Cortisone Reduces Joint Pain & Inflammation
Cortisone turns down the inflammatory response in the treated area. Swelling decreases, and pain often eases within a few days. This makes it useful for flare-ups such as hip bursitis or a sudden arthritis flare. Cortisone does not repair damaged tissue. Relief usually lasts several weeks to a few months, and pain may return once the effect wears off.
How PRP Reduces Joint Pain & Inflammation
PRP takes a different path. Rather than shutting down inflammation, it delivers concentrated growth factors that encourage the body’s own repair process. Improvement tends to build gradually over several weeks. PRP is often considered for problems where healing has slowed. These include tennis elbow, golfer’s elbow, Achilles tendinopathy, partial ligament tears, rotator cuff inflammation, and mild to moderate knee osteoarthritis. It is also an option for stubborn plantar fasciitis that persists after stretching, orthotics, and steroid injections.
Key Differences Between PRP and Cortisone Injections
Source: Cortisone is a medication. PRP comes from your own blood.
Goal: Cortisone reduces inflammation and pain. PRP supports tissue healing.
Speed: Cortisone often works within days. PRP usually takes several weeks.
Duration: Cortisone relief is typically temporary. PRP benefits may last longer for some patients.
Repeat use: Cortisone injections into the same joint are usually limited and spaced apart. PRP may be given as a short series.
Typical fit: Cortisone suits acute flares. PRP suits chronic soft-tissue and joint problems that have stalled.
Pros and Cons of PRP vs. Cortisone Injections
Cortisone pros:
Fast relief from pain and swelling
Helpful for calming a flare so you can stay active or start physical therapy
Widely used and well understood
Cortisone cons:
Relief is temporary and does not repair tissue
Repeated injections into the same area are generally limited
It can temporarily raise blood sugar, which matters for patients managing diabetes
PRP pros:
Uses your body’s own healing factors
Targets the tissue problem rather than only the symptoms
May help some patients delay or avoid more invasive procedures
PRP cons:
Results build slowly
Response varies from person to person
Some patients need more than one session
What Does the Research Say?
Research consistently supports cortisone for short-term pain relief, especially in the first several weeks. Evidence for long-term benefit is weaker. Some research also raises concern about frequent cortisone injections into the same joint over time.
Research on PRP continues to grow. Findings for knee osteoarthritis and chronic tendon problems such as tennis elbow suggest PRP may offer longer-lasting improvement than cortisone for some patients. Results are not the same for everyone, and outcomes depend on the condition and how advanced it is. This is why an individual evaluation matters more than any general rule.
How to Choose the Right Option for Joint Pain
Several factors shape the decision:
How long you have had pain. A recent flare may respond well to cortisone. Pain that has lingered for months may point toward PRP.
Your goals. Quick relief before a trip or event favors cortisone. Longer-term healing favors PRP.
Your other health conditions. Diabetes, blood thinners, and other medications all affect which injection is safer and more effective for you.
Past treatments. If cortisone has helped less with each injection, PRP may be worth discussing.
This is where a primary care approach helps. Because our providers manage chronic conditions, medications, and labs in one chart, your injection plan accounts for your whole health. This matters for many older adults and Medicare patients living with knee or shoulder arthritis alongside conditions such as diabetes or high blood pressure. Some care plans use both treatments at different stages. Cortisone may calm a flare first, with PRP or viscosupplementation considered later.
Conclusion
Cortisone offers fast, short-term relief from inflammation. PRP supports longer-term healing using your own growth factors. We hope this guide helps you weigh both options. The right choice depends on your condition, your goals, and your overall health, and our team builds that decision into your ongoing primary care.