Medically reviewed by Oluseun Olufade, MD Key Takeaways Knee hyperextension happens when the knee bends backward too far.

Because of its complex range of motion and the weight that’s often distributed through the joint, the knee is vulnerable to injury. The knee is one of the most complex joints in your body. It can flex ...

A hyperextended knee — or knee hyperextension — develops when the knee joint bends the wrong way and can damage the ligaments in the knee. The condition is common in athletes who play high-impact ...