http://www.orthopaedicweblinks.com Patient education information on knee problems and causes of knee pain en-us Fri Jul 04 2008 14:35:13 GMT Copyright 2005 OWL Inc. orthopaedicweblinks@gmail.com (Christian Veillette) orthopaedicweblinks@gmail.com (OWL Inc.) http://www.orthopaedicweblinks.com/Detailed/9647.html The knee - formed where the bottom of the thigh bone (femur) meets the top of the shin bone (tibia) - is arguably the body's largest and most complex weight-bearing joint. When the knee is healthy, the joint moves freely. This is because the joint is covered with white elastic materials called cartilage and powered by large muscles. 2006-10-20 14:35:13 GMT http://www.orthopaedicweblinks.com/cgi-bin/owl/jump.cgi?ID=9647