A cortisone injection in the knee delivers a powerful anti-inflammatory medication directly into the joint. This corticosteroid mimics the body’s natural cortisol hormone to reduce swelling and discomfort. Its primary purpose is to alleviate pain and inflammation in the knee, often associated with conditions like arthritis, bursitis, tendonitis, or injuries. While it provides symptomatic relief, it does not address the underlying cause of the pain or promote healing of damaged tissues.
Understanding Post-Injection Recommendations
Rest is recommended after a cortisone injection in the knee to allow the medication to settle effectively within the joint. This period helps maximize therapeutic benefits and minimizes the risk of a “steroid flare,” a temporary increase in pain or inflammation at the injection site. A steroid flare occurs as the body reacts to the injected crystals and resolves within a few days.
For knee injections, healthcare providers advise relative rest for 24 to 48 hours following the procedure. During this time, limit strenuous activities that put significant stress on the knee. This includes avoiding heavy lifting, high-impact exercises, or prolonged standing and walking.
While complete immobilization is not necessary, protecting the area for a day or two is important. Gentle, low-impact activities like short walks are permitted if they do not cause discomfort. Applying ice to the injection site can reduce post-injection soreness or swelling.
Returning to Activity
After the initial rest period of 24 to 48 hours, gradually reintroducing activities to the knee is important. The timeline for returning to normal daily activities and exercise routines can vary based on individual response and the specific condition being treated. Listening to the body’s signals and avoiding activities that cause pain or discomfort is crucial.
Most individuals can resume light physical activity after a day or two, progressing to gentle range-of-motion exercises within 10 to 14 days. High-impact activities, such as running or jumping, should be avoided for at least a week. A gradual return to more intense exercise, including strengthening routines, may begin around four weeks post-injection.
Monitor the knee for any signs of a problem. Persistent or worsening pain, significant swelling, warmth, or redness around the injection site, or the development of a fever, could signal an infection or another complication. If any of these symptoms occur, contact a healthcare provider promptly.