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.
According to the USGS the exact co-ordinates were 35.846Â°S, 72.719Â°W. Chile has also experienced the worlds largest earthquake (magnitude 9.5) that occurred on the 22nd of May 1960. The epicenter of this quake was near Canete approximately 900 km (435 miles) south of Santiago.here did the 1960 chilean earthquake happen? The chilean earthquake occured in the afternoon and its resulting tsunami affecte southern chile, hawaii, japan, the philippines, eastern new zealand, southeast australia, and â¦ the aleutian islands in alaska.