While bursa injections are generally safe, there are some risks and potential side effects to be aware of. Common side effects include temporary pain, redness, or swelling at the injection site. In rare cases, patients may experience infection, bleeding, or an allergic reaction to the injected medication. Long-term corticosteroid injections can weaken tendons or other tissues in the joint. Discussing these risks with your physician will help you make an informed decision about your treatment.