Knee hyperextension occurs when the knee joint bends backward beyond its normal range of motion. Depending on the severity, ...

Doctors may recommend exercises and stretches to help a person strengthen the muscles around the knee. This can help ... the toes without causing pain. A standing hamstring stretch is also an ...

It lasted for roughly one half. George exited the Sixers' game against the Memphis Grizzlies, a 117-111 loss, with a left knee hyperextension and did not return, per ESPN's Shams Charania.