The ACL stabilises the knee for slicing, twisting and jumping and pivoting activity. The anterior cruciate ligament is in the middle in the knee joint. Any time you tear an ACL, you are going to normally come to feel or listen to a pop, experience the knee change from location https://www.theorthopaedicandpainpractice.com/what-should-i-do-if-i-have-a-collateral-ligament-injury-of-the-knee/?_gl=1*xbbxlb*_up*MQ..&gclid=Cj0KCQjwkt6aBhDKARIsAAyeLJ2krYJSOuy5mZksrNqH-VDjQwW1ScD49yD8BUWysDG6u6bJPCSbXVUaAuCPEALw_wcB