When is a knee injection right for you? Dr. Timothy Kahn explains common knee injections for patients with joint problems. Among the most common types are: • Corticosteroid • Hyaluronic acid • PRP • Stem cell For each type, there are some considerations to make—depending on your situation and goals. Dr. Kahn is an orthopedic surgeon specializing in knee and hip care, and he often helps patients decide on the best course of action. Whether that course of action is non-surgical or surgical, his fo