Most ACL injuries are complete or near complete tears. About 1/2 of ACL injuries occur along with damage to other structures in the knee. Injured ligaments are considered "sprains" and are graded on a severity case. (Grade 1-3 sprains)
Rafael Alcantara, also known as, Rafinha suffered a tear to the Anterior Cruciate Ligament on September 16,2015. He was injured after being brought down from behind on a slide tackle. He had to undergo surgery and was told he would be out for the rest of the season and has yet to say when he'll be back.
Females are at greater risk, mainly because females have stronger quadriceps muscles in relation to the posterior chain muscles, coupled with weaker and more moveable core muscles.