What is osteoarthritis?
Osteoarthritis, sometimes called OA, is a type of arthritis that only affects the joints, usually in the hands, knees, hips, neck, and lower back. It’s the most common type of arthritis.
In a healthy joint, the ends of the bones are covered with a smooth, slippery tissue called cartilage. The cartilage pads
Osteoporosis is a disease that thins and weakens the bones. Your bones become fragile and fracture (break) easily, especially the bones in the hip, spine, and wrist. In the United States, millions of people either already have osteoporosis or are at high risk due to low bone mass.
Anyone can develop osteoporosis, but it is more
Cancer that starts in a bone is uncommon. Cancer that has spread to the bone from another part of the body is more common.
There are three types of bone cancer:
Osteosarcoma – occurs most often between ages 10 and 19. It is more common in the knee and upper arm.
Chondrosarcoma – starts in cartilage,