So, at the risk of igniting yet another "Maroney is made of glass" firestorm thread, I am curious as to what actually makes players injury prone. Is there something about them physically that causes their joints, bones, etc. to get damaged easier than others? Are they too aggressive that they end up getting hurt? Do they lack the proper balance or agility and as a result are often putting their bodies in awkward positions that increase the potential for injury? To me, it seems that a twisted ankle, broken arm or separated shoulder are injuries that could happen to anyone, so why would it be more likely for some than others?