Originally Posted by CloakNNNdagger
This injury can be caused during contact or non-contact or by an already present posterior collateral ligament (PCL) or meniscus or even ACL injury. It can also notoriously cause PCL and ACL tears (as well as meniscus damage). Studies have shown that knee hyperextensions can increase the potential risk for ACl tears by 5 times. The extent of the hyperextension will determine the recovery. Mild injury may only take several weeks. Significant collateral damage of structures may require surgery. An MRI will be performed to determine if Watt has sustained a minor sprain or a major tear. Only then is it likely that we will be able to determine his probable time of return. Hopefully this will have only been a small bump in the road for the big man.
On a better note, I have seen college players go down with a hyperextended knee---very painfull---go to the sidelines for a series and come back in the game seemingly ready to go.