The disease that affects the joints in the body is referred to as osteoarthritis. It is the most common chronic condition of the joints. It is characterized by the breakdown of the cartilage, thus causing pain, swelling and limited mobility. The joints on one side of the body are usually more affected. Osteoarthritis can be classified into spondylosis, trapeziometacarpal osteoarthritis, knee osteoarthritis, hip osteoarthritis and wrist osteoarthritis. It may be caused due to a combination of mechanical stress on the joint and inflammatory processes. Its diagnosis is based on the presentation of signs and symptoms alone, and in some cases it is guided by X-ray results. The treatment of osteoarthritis includes pain medications, weight loss, exercise and resting. In extreme instances of pain which deters normal activities, joint replacement surgery is considered a viable treatment. This book is compiled in such a manner, that it will provide an in-depth case-based approach to the study of osteoarthritis. It strives to provide a fair idea about the diagnosis and management of osteoarthritis. With state-of-the-art inputs by acclaimed experts of orthopedics, this book targets students and professionals.