‘“Not many people tear their quad off,” said Heather Linden, the director of physical therapy at the UFC Performance Institute in Las Vegas, where Liuget trained last summer. “It’s very uncommon. Normally, you’ll get the ligaments that tear before that severe of a muscle tear. It is very rare. I’ve probably worked with about 10 in the 14 years I’ve been a clinician, so I’ve seen it. But ACLs, I’ve probably done 500.”’