The condition known as arthritis makes your joints painful, swollen, and stiff. Your body’s strongest and largest joints may be impacted. More specifically, knee arthritis can be a severe and incapacitating condition. You can take certain actions that may help you manage your symptoms and possibly even slow the course of your illness. Physical therapy can help in many ways. For example, by strengthening your core and hip muscles, which can help control knee pain and help you live more comfortably.