ACL & meniscus

GPくんのfollow-upです。「靱帯」（ anterior cruciate ligament）はbig wordなので、しばしば「ACL」とacronymで呼ばれます。「断裂する」にはtearを使います。
リベラ投手は同時に半月板（meniscus）の一部も損傷しているようです。ケガをしたその瞬間が：

http://mlb.mlb.com/video/play.jsp?content_id=21128441&topic_id=&c_id=mlb&tcid=vpp_copy_21128441&v=3

にあります。この２つがダブルでくると、athleteにとっては致命的です。（UG）

Mariano's future in doubt after tearing ACL
Closer also has partially torn meniscus after shagging fly balls
By Bryan Hoch / MLB.com | 05/04/12 1:37 AM ET

KANSAS CITY -- The greatest closer in baseball history stood at the center of the visiting clubhouse at Kauffman Stadium, his head bowed and his eyes welling with tears, and Mariano Rivera could not say if he will ever pitch from a Major League mound again.
"At this point, I don't know," Rivera said, repeating in a soft hush, "At this point, I don't know. We have to face this first."

The Yankees closer confirmed that he suffered a torn anterior cruciate ligament in his right knee, as well as a partially torn meniscus, in a batting practice mishap on Thursday. At the very least, the all-time saves leader is expected to miss the rest of the 2012 season.

http://mlb.mlb.com/news/article.jsp?ymd=20120503&content_id=30328258&vkey=news_mlb&c_id=mlb