Abbreviation: AFO. Any of a class of external orthopedic appliances, braces, or splints devised to control, limit, or assist foot and ankle motion and provide leg support. Typically, orthotics are made of lightweight materials such as thermoplastics. See: illustration.
Some minerals such as calcium are needed in large quantities, while others such as zinc are only needed in trace amounts. Zinc is an essential mineral that is important for keeping your immune system strong and helps your body fight infections, heal wounds and repair cells.alcium is the most abundant mineral in your body and is found in your bones and blood. Along with the minerals phosphorus and magnesium, calcium gives your bones strength and density.
Zinc helps your body make proteins, heal wounds and maintain its immune function, while selenium is an antioxidant that aids in reproduction and thyroid hormone metabolism. Many foods that are rich in zinc are also excellent sources of selenium, and they're also high in protein.