An injury or arthritis most likely causes pain outside the knee. A doctor can determine the cause based on your other symptoms and the results of imaging tests. Pain on the outer (or lateral ...

Behind-the-knee pain could be due to muscle strain or arthritis—or something far more serious. Orthopedic experts say these ...

They've been increasing their mileage and intensity, but lately, they've started to experience pain on the outer side of their knee. This is a common symptom of outer knee pain, which can be ...