anterior cruciate ligament
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Examples from the Web for acl
Those like ski jumper Sarah Hendrickson who underwent surgery last August to repair two torn ligaments (ACL and MCL) in her knee.Media Coverage of Olympic Terror Threats Shines Spotlight on Wrong Players|Dean Obeidallah|February 3, 2014|DAILY BEAST
It takes the skier with an ACL tear about a year to get back on the slopes.