Cortisone injections are a common medical approach for managing knee pain, often employed to address inflammation stemming from conditions such as arthritis or injuries. Many individuals who receive these injections seek to understand when they can safely resume physical activities. The timeline for returning to exercise after a knee cortisone shot involves careful consideration, aiming to optimize the treatment’s benefits while preventing potential complications.
Initial Recovery Period
Immediately following a cortisone injection in the knee, prioritize rest for the initial 24 to 48 hours. This period allows the injected medication, which often includes both a corticosteroid and a local anesthetic, to settle effectively within the joint capsule. Resting the knee during this time can help maximize the steroid’s anti-inflammatory action and minimize discomfort at the injection site. Applying ice packs to the treated area can help alleviate any soreness or swelling that may occur.
Some individuals might experience a temporary increase in pain and inflammation, known as a “cortisone flare,” within hours to a few days after the injection. This flare is caused by the body’s reaction to the corticosteroid crystals and usually subsides within 1 to 3 days. This is generally a normal and temporary response, not an indication that the injection has failed. Over-the-counter pain relievers can help manage this discomfort.
Timing Your Return to Exercise
The decision to resume exercise after a knee cortisone injection depends on several factors. Most healthcare providers recommend avoiding strenuous activity for at least 24 to 48 hours. This allows the corticosteroid to work effectively and prevents it from leaving the joint prematurely. Some sources suggest this rest period might extend up to 72 hours. After this initial rest, light activity may be considered as tolerated.
Factors influencing the return to exercise include the underlying knee condition, the severity of pain prior to the injection, and the specific type of activity planned. For lower-extremity injections, progressive load-bearing activities, such as cycling or elliptical use, can begin after 24 to 48 hours. Listen to your body and do not push through pain, as discomfort indicates the need to scale back activity. Consulting with your doctor or physical therapist for personalized guidance is recommended to ensure a safe return to your routine.
Recommended Exercise Progression
When reintroducing exercise, a gradual progression is important to avoid re-injury and support healing. Begin with very low-impact activities that place minimal stress on the knee joint. Gentle walking on flat surfaces is typically safe after the initial 24 to 48-hour rest period. Gentle range-of-motion exercises can also be started within 10 to 14 days following the injection.
As comfort levels improve, slowly increase the intensity and duration of your activities. Stationary cycling with low resistance or gentle stretching are suitable options for further progression. High-impact activities such as running, jumping, deep squats, or heavy lifting should be avoided for at least a week, as these can put excessive stress on the joint. Strengthening exercises can usually be incorporated into your routine around four weeks after the cortisone shot.
Recognizing Potential Complications
While cortisone injections are generally safe, be aware of potential signs indicating a complication that requires medical attention. An increase in pain, redness, or swelling at the injection site that persists for more than 48 hours could signal an issue. Other worrying symptoms include warmth around the joint, fever, chills, or any discharge from the injection site, as these can be signs of a joint infection.
Joint infection, though rare, is a serious complication requiring immediate medical evaluation. If you experience significant pain that does not subside, or notice any changes in skin color or dimpling around the injection area, contact your healthcare provider. Promptly addressing these signs can help prevent severe issues and ensure appropriate management.