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Osteonecrosis

https://www.niams.nih.gov/health-topics/osteonecrosis

What is osteonecrosis? Osteonecrosis is a bone disease. It results from the loss of blood supply to the bone. Without blood, the bone tissue dies. This causes the bone to collapse. It may also cause the joints that surround the bone to collapse. If you have osteonecrosis, you may have pain or be limited in your physical activity. Osteonecrosis can develop in any bone, most often in the: Thigh bone (femur). Upper arm bone (humerus). Knees. Shoulders. Ankles. It is also called: Avascular necrosis. Aseptic necrosis. Ischemic necrosis.

Osteopetrosis

https://www.niams.nih.gov/health-topics/osteopetrosis

What is osteopetrosis? Osteopetrosis is a rare disorder that causes bones to grow abnormally and become too dense. When this happens, bones can break easily. In addition, bones may be misshapen and large, causing other problems in the body, such as problems with: Seeing and hearing. Fighting infection. Controlling bleeding. Osteopetrosis is a genetic disease that a child inherits from their parents. The disorder may be mild to severe, and symptoms may show up early after birth or later in adulthood.

Vitiligo

https://www.niams.nih.gov/health-topics/vitiligo

What is vitiligo? Vitiligo is a chronic (long-lasting) disorder that causes areas of skin to lose color. When skin cells that make color are attacked and destroyed, the skin turns a milky-white color. No one knows what causes vitiligo, but it may be an autoimmune disease. In people with autoimmune diseases, the immune cells attack the body’s own healthy tissues by mistake, instead of viruses or bacteria. A person with vitiligo sometimes may have family members who also have the disease. There is no cure for vitiligo, but treatment may help skin tone appear more even.

Growth Plate Injuries

https://www.niams.nih.gov/health-topics/growth-plate-injuries

What are growth plate injuries? Growth plates are areas of growing tissues that cause the long bones in children and teens to grow. Injuries to the growth plate happen when a break or fracture develops near or at the end of a long bone. The growth plate is the weakest part of the growing skeleton. Growth plate injuries usually happen at the: Bones of the legs. Wrist. Ankle. Foot. Hip bone. When you finish growing, the growth plates close and are replaced by solid bone.

Marfan Syndrome

https://www.niams.nih.gov/health-topics/marfan-syndrome

What is Marfan syndrome? Marfan syndrome is a genetic disorder that affects the body’s ability to make healthy connective tissue, which supports the bones, muscles, organs, and tissues in your body. The condition can affect different areas of the body, including: Bones, ligaments, tendons, and cartilage. Organs, such as the heart and lungs. Skin.

Paget’s Disease of Bone

https://www.niams.nih.gov/health-topics/pagets-disease-bone

What is Paget’s disease? Paget’s disease of bone is a chronic (long-lasting) disorder that causes bones to grow larger and become weaker than normal. Usually only one or a few bones have the disease. Many people with Paget’s disease do not have symptoms. However, the bone changes can cause: Bone pain. Misshapen bones. Broken bones (fractures). Problems in the joints near the bones with the disease. With treatment, many people can: Manage their symptoms. Improve pain. Control the effects of the disease.

Osteoporosis

https://www.niams.nih.gov/health-topics/osteoporosis

What is osteoporosis? Osteoporosis is a disease that causes bones to become weak and brittle. This increases your risk of broken bones (fractures). Osteoporosis is a “silent” disease because you may not have symptoms. You may not even know you have the disease until you break a bone. Breaks can occur in any bone but happen most often in: Hip bones. Vertebrae in the spine. Wrist. You can take steps to help prevent osteoporosis and broken bones by: Doing weight-bearing exercises, such as walking or dancing, and lifting weights. Not drinking too much alcohol. Quitting smoking, or not starting if

Knee Problems

https://www.niams.nih.gov/health-topics/knee-problems

What are knee problems? Knee problems happen when you injure or develop disease in your knee and it can’t do its job. The knees provide stable support for the body. They also allow your legs to bend and straighten. Both flexibility and stability are needed to stand, walk, run, crouch, jump, and turn. Other parts of your body help the knees do their job. These are: Bones. Cartilage. Muscles. Ligaments. Tendons.

Sports Injuries in Youth: A Guide for Parents

https://www.niams.nih.gov/health-topics/sports-injuries-in-youth

What are sports injuries in youth? Although sports injuries can range from scrapes and bruises to serious brain and spinal cord injuries, most fall somewhere between the two extremes. Here are some of the more common types of injuries: Muscle sprains and strains. Injuries of a growth plate, area of tissue at the end of the long bones in growing children and teens. Injuries from overuse of muscles and tendons. Learn more about sports injuries.

Modified Protein Improves Vitiligo Symptoms in Mice

https://www.niams.nih.gov/newsroom/spotlight-on-research/modified-protein-improves-vitiligo-symptoms-mice

Altering a key protein involved in the development of vitiligo may protect against—or even reverse—the pigmentation loss associated with the skin disorder in mice, according to recent research funded by the NIH’s National Institute of Arthritis and Musculoskeletal and Skin Diseases, and published in the journal Science Translational Medicine. Vitiligo is a progressive autoimmune disease in which the skin cells that impart color (melanocytes) are destroyed, resulting in white patches on the face, hands and other parts of the body. Scientists are unsure what causes vitiligo. They are investigating the biological mechanisms that trigger the disease, as well as its

Same Immune Regulatory Protein Found to Play Instrumental Role in Two Hereditary Autoinflammatory Diseases

https://www.niams.nih.gov/newsroom/spotlight-on-research/same-immune-regulatory-protein-found

Research funded in part by the NIH’s National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) has revealed a new role for A20, a protein that regulates a key immune response pathway, in certain early-onset autoinflammatory diseases. The results suggest that targeting this pathway could be an effective strategy for treating these diseases, and possibly related conditions, as well.