Spontaneous Osteonecrosis of the Knee - SONK. Also known as: Ahlbackâs disease. A condition of unknown aetiology characterized by the development of an area of osteonecrosis on the weight-bearing surface of the medial femoral condyle.
Friday 8 November 2013 09.16 EST First published on Friday 8 November 2013 09.16 EST. When 33 Chilean miners were hauled to the surface after 69 days trapped in a collapsed copper mine in 2010, more than a billion people around the world tuned in to watch as the rescue was broadcast live on television.
A thick plume pours from the Calbuco Volcano near Puerto Montt, Chile, on Thursday, April 30. The volcano erupted again Thursday, marking the third time since last week. About 1,500 people were evacuated this time, an Interior Ministry official said. The eruptions at the Calbuco are the first in more than four decades.