Cortisone injections, hyaluronic acid injections, or platelet rich plasma injections? Which treatment should you choose to help relieve pain and disability related to symptomatic knee arthritis? This new systematic review and meta-analysis compared common injections we use to help provide symptom relief for arthritis. And the results are NOT what you think they’re going to be. Osteoarthritis is one of the most common causes of pain and disability worldwide. And once arthrit