Arthritis is a painful condition in which the cartilage inside a joint has become damaged or worn. It can occur in any joint of the foot and ankle. Treatment options depend on which joint is affected and the extent of involvement. Non-steroidal anti-inflammatory medication can be helpful in relieving pain. Additionally, periodic injections of steroid, platelet-rich plasma, or viscosupplementation can be effective. Bracing and orthotics can improve function and potentially limit progression of disease. Surgery is reserved for severe cases when conservative measures fail. Surgical options include removing bone spurs, trimming damaged cartilage, fusion of the joint, and in some cases, joint replacement.