An extended knee means when your leg is straight. A hyperextended knee means when it is pushed back beyond straight which can result in injury.
Hyper. For example, if you hyperextended your knee, then you hurt your knee by moving it excessively (beyond its normal limits).
Knee Cap
I know when I did that, I twisted the ligaments in my knee.
A hyperextended blood vessel could cause a stroke
Pain, discomfort, deformity, unstable knee and frequent locking of the knee will indicate the need for surgery
i don't know i think behindind ur knees or something
A TWO KNEE FISH =]
An armbar is a joint lock where the elbow is hyperextended in order to cause pain or injury in combat sports.
He had a majore knee injury in 1997 I doen't know exacly yet
A hyperextended thumb occurs when the thumb is bent backwards beyond its normal range of motion. This can result in stretching or tearing of the ligaments supporting the thumb joint, causing pain, swelling, and instability in the thumb. Treatment may involve rest, ice, splinting, and physical therapy.
I was actually googling nunn's knee to see if what I heard is true. I was told it is knee pain that cannot be explained, nuns apparently get it from kneeling alot. Don't know if it is true or not.