• 16 May, 2026
• UnityPain
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Knee Joint Injection: What to Expect | Unity Pain

You Are Not Alone in This

Living with knee pain can feel exhausting. Simple things like walking to the mailbox, climbing stairs, or playing with your grandchildren can become real challenges. If you have been dealing with knee pain for a while, you may have already tried rest, physical therapy, or over-the-counter pain relievers. When those options are not enough, your doctor may talk to you about a knee joint injection. It is completely normal to feel nervous or unsure about what that means. This article is here to help you understand what a knee joint injection is, how it works, and what you can expect before, during, and after the procedure.

What Is a Knee Joint Injection?

A knee joint injection is a procedure where medicine is placed directly inside the knee joint using a small needle. Because the medicine goes right to the source of the pain, it can sometimes work better than taking a pill by mouth. The most common types of medicine used in knee injections include corticosteroids, which help reduce swelling and inflammation, and hyaluronic acid, which helps lubricate the joint. In some cases, other treatments like platelet-rich plasma (PRP) may also be discussed with your provider.

Knee joint injections are often used for conditions like osteoarthritis, rheumatoid arthritis, bursitis, and other causes of knee inflammation. They are generally considered when other treatments have not provided enough relief. A qualified medical provider will review your health history and imaging results to decide if a knee injection is the right choice for your situation.

Before the Procedure: Getting Ready

Preparing for a knee joint injection is usually simple. Your provider will ask about any medicines you take, especially blood thinners, since some may need to be paused before the procedure. You should also let your provider know about any allergies, recent infections, or skin problems near your knee. In most cases, you do not need to fast or do anything special the night before.

It is a good idea to wear loose, comfortable clothing that makes it easy to access your knee. Some people choose to bring a family member or friend for support. Do not hesitate to ask your care team any questions ahead of time. Understanding what will happen can help you feel calmer and more in control on the day of your appointment.

During the Injection: Step by Step

When you arrive, you will be asked to sit or lie down in a comfortable position with your knee slightly bent or straight, depending on your provider’s preference. The skin around your knee will be cleaned carefully to prevent infection. Your provider may apply a numbing spray or inject a small amount of local anesthetic to make the area more comfortable before placing the main needle.

The injection itself usually takes just a few minutes. Most people feel a brief pressure or mild pinch. Some providers use ultrasound imaging to guide the needle into the exact right place inside the joint. This helps make the injection more precise and effective. Once the medicine is delivered, the needle is removed, and a small bandage is placed over the site. You will typically be watched for a short time before going home.

After the Injection: What to Expect

It is common to feel some soreness or achiness around the knee for a day or two after the injection. This is sometimes called a “steroid flare” when corticosteroids are used, and it usually goes away on its own. Applying ice to the area for short periods can help with this temporary discomfort. Your provider will give you specific instructions about activity after the procedure.

Most people are able to return to light daily activities fairly quickly, but it is wise to avoid strenuous activity for at least 24 to 48 hours. Results from knee injections can vary from person to person. Some people notice improvement within a few days, while for others it may take a week or two. How long relief lasts also depends on the type of injection, the underlying condition, and individual factors. Your care team will follow up with you to see how you are doing.

Are There Any Risks?

Like any medical procedure, knee joint injections carry some risks, though serious complications are uncommon. The most important risks include infection, bleeding, and temporary worsening of pain. Repeated use of corticosteroid injections over time may affect the cartilage in the joint, which is why providers typically limit how often they are given. Allergic reactions are rare but possible.

Your provider will go over all risks and benefits with you before the procedure so you can make an informed decision. It is important to be honest about your medical history and any concerns you have. Open communication with your care team is one of the best things you can do for your own safety and comfort.

How Unity Pain Management Can Help

If you have been struggling with knee pain and are wondering whether a joint injection might help you, speaking with a pain management specialist is a good first step. At Unity Pain Management in Modesto, CA, the care team works with patients to find individualized solutions for knee pain and other chronic pain conditions. The clinic is insurance-friendly and offers both in-person and telehealth visits, making it easier to get the care you need.

You do not have to keep pushing through the pain alone. A thorough evaluation can help determine whether a knee injection, physical therapy referral, medication management, or another approach makes the most sense for your specific situation. The goal is always to help you move more comfortably and enjoy a better quality of life.

A Hopeful Path Forward

Knee pain does not have to define your days. Many people find real relief through knee joint injections when combined with an overall care plan that addresses their needs. While no treatment can guarantee results, taking the step to explore your options is a sign of strength. You deserve support, clear information, and a care team that listens to you. Reaching out to ask questions is always the right move.

References

• Arden, Nigel K., et al. “Intraarticular Corticosteroids for Osteoarthritis of the Knee.” New England Journal of Medicine. 2006.
• National Institute of Arthritis and Musculoskeletal and Skin Diseases. “Osteoarthritis.” National Institutes of Health. 2023.
• Mayo Clinic Staff. “Cortisone Shots.” Mayo Clinic. 2023.
• Bannuru, Raveendhara R., et al. “Comparative Effectiveness of Pharmacologic Interventions for Knee Osteoarthritis.” Annals of Internal Medicine. 2015.
• International Association for the Study of Pain. “Chronic Pain and Treatment Options.” IASP. 2022.