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's government leader is the President of Mexico whom is the head of government, head of state and Supreme Commander of the Mexican armed forces. Felipe de Jesus Calderon â¦ Hinojosa (b. August 18, 1962) is the President of Mexico. Calderon took office on 2006 December 1, and will serve until 2012 November 31.