An ostomy treats certain diseases of the digestive or urinary systems. Learn about different types of ostomy including colostomy and ileostomy READ MORE
Osteoporosis is a disease that weakens your bones and makes them more likely to break or fracture. There are no symptoms until the first bone break. READ MORE
Osteonecrosis (Avascular Necrosis) is marked by a loss of blood supply to the bones, causing bone to break down faster than the body make new bone. READ MORE
Osteoarthritis is the most common form of arthritis. It usually affects your hands, knees, hips, or spine. Learn about treatment and management. READ MORE
Orthodontia is the branch of dentistry that uses treatments such as braces, aligners, and retainers to straighten your teeth and correct your bite. Learn more. READ MORE
When you have an organ transplant, doctors remove an organ from another person and place it in your body. Read about the common organ transplants. READ MORE
Oral cancer can form in the mouth or throat but usually begins in the tongue and floor of the mouth. Read about the common oral cancer symptoms. READ MORE
Your optic nerves carries visual images from the back of your eye to your brain. Learn about optic nerve disorders and how they affect your vision. READ MORE