Arthritis is a general term for inflammation in the joints. Arthritis can occur in numerous forms. The most common is osteoarthritis, a condition in which the cartilage, the protective cushioning between the joints, wears out.When this happens, the bones rub directly against other bones. This causes structural changes that can be seen on X-rays.he most common is osteoarthritis, a condition in which the cartilage, the protective cushioning between the joints, wears out. When this happens, the bones rub directly against other bones. This causes structural changes that can be seen on X-rays.
At the 1968 Summer Olympics Bob Beamon jumped 8.90 m (29 ft 2 1â4 in) at an altitude of 7,349 feet (2,240 m), a jump not exceeded for 23 years, and which remains the second longest legal jump of all time.
Since 1936, when the first jump beyond 100 metres (330 ft) was made, the discipline of ski flying â an offshoot of ski jumping â has produced all the world records. As of March 2017, the official world record for the longest ski jump is 253.5 metres (832 ft), set by Stefan Kraft at Vikersundbakken in Vikersund, Norway.