Physical conditions or diseases that can cause knee pain: 1  osteoarthritis: pain, inflammation, and joint destruction caused by degeneration and deterioration of the joint. 2  tendinitis: pain in the front of the knee that is made worse when climbing, taking stairs, or walking up an incline.
Ages Of US Presidents. John F. Kennedy is the youngest-ever elected president, aged 43. However, Theodore Roosevelt is the youngest person to ever become president. He was 42 when he succeeded to the presidency, following the assassination of McKinley. Ronald Reagan is the oldest person ever to be elected president. He was 69.
184. Note: Roosevelt was sworn in after the assassination of William McKinley in 1901, making Kennedy the youngest president actually voted to the office.At 69, Ronald Reagan was the oldest president to take office.84. Note: Roosevelt was sworn in after the assassination of William McKinley in 1901, making Kennedy the youngest president actually voted to the office. At 69, Ronald Reagan was the oldest president to take office.