Total knee replacement may be done on people, usually over 55, whose knees have been damaged by arthritis, trauma, or other destructive diseases of the joint resulting in severe limiting knee pain and significant stiffness, instability (constant giving way) and deformity (lock-knees or bowlegs) of the knee.
The Mexican government has a Federal District, which houses the federal government. The Federal District is a physical place and a territory, bordering Mexico City, which is the country's capital city. This is not counted as one of the states, and is much like the United States' District of Columbia.
Mexico City, Mexicoâs largest city and the most populous metropolitan area in the Western Hemisphere, is also known as Distrito Federal, or the federal district. It is the countryâs economic and cultural hub, as well as home to the offices of the federal government.