[Chaos]

The infliction rates aren't a problem; if anything, Mega and Rendar's suggestions would likely make wound infliction so rare that no one realizes the system exists until the stars align with a nuke blasting someone's HP in half.

However, I'm concerned that as the system currently stands, Crippling wounds are going to be the most common, whereas Minor wounds would be the rarest, since both the chance of wound infliction AND the severity of the wound depend on how high the damage is. That doesn't really sound right; you would accrue more minor cuts and scratches than you would get gaping wounds, I believe.