Artery doesn't reduce dexterity. Only strength.
Hurl torso is only strength loss, and throat has no stat loss. All the others have a combination of strength and dex loss.
Vital area is only strength loss.
Boneshatter reduces dex by the same number it reduces str. ~10 at hero.
Same is true for whirl as is for boneshatter. ~6 at hero.
Hamstring is only dex loss. ~10 at hero.
Impale is the same as whirl and boneshatter. ~6 at hero.
Twist -can- cause str and dex loss.