hand foot major wound knockdown stunning

[Captain Joy]

The italic emphasis below is mine.

1. Injury over IP/3 cripples a hand or foot [B420-1].
2. An injury that cripples a body part also counts as a major wound [B420].
3. Whenever you suffer a major wound you must make an immediate HT roll to avoid knockdown and stunning [B420].
   • Success: ordinary shock penalties
   • Failure: Stunned, drop anything you're holding, and fall down
   • Failury by 5+ or critical: You fall unconscious
4. After combat you make a HT roll to see how serious the wound is [B422].
   • Success: Full recovery after normal healing
   • Failure: a lasing injury, but ultimately a full recovery
   • Critical Failure: The hand/foot is permanently crippled and you gain the appropriate disadvantage

A red shirt in my Star Trek campaign recently got a harpoon through his right hand. I remembered the first HT roll right after he received the crippling/major-wound injury. He made his HT roll. But, had he failed it, he's really supposed to suffer knockdown? From a hand injury??? Such knockdown seems a reasonable for major wounds to the body or legs, but not arms or hands. (Not sure about a foot.)

I encourage one and all to explain to me why it's realistic for a person that gets shot in the hand to fall down about half the time. Or, if I've got the rules wrong, please enlighten me.

(The player still needs to make his second HT roll to see how serious the crippling injury is.)

[vierasmarius]

The "knockdown" is a reaction to pain, not being bowled over by a mighty blow (that's knockback). The rules seem to assume that crippling wounds are as painful as any other Major Wound. Having only ever broken a wrist, I can't compare a crippled extremity to a crippled limb. But it certainly hurt enough to Stun.

It might be reasonable to give characters a slight bonus to resist knockdown caused by crippled extremities, if you feel they should be less disruptive.

[vicky_molokh]

In my games, I'm planning to houserule that if the stunning check is failed, a knockdown is not automatic, but requires failing another check (with the same modifiers).

[Ulzgoroth]

To echo vierasmarius, knockdown is 'you fall over', not 'you are knocked over' (covered by knockback, collision/slam rules, or various maneuvers) nor 'you no longer have the mechanical ability to stand' (covered by crippling of the legs, feet, or pelvis).

[thulben]

I'd say yes, you can be knocked down by a crippling wound to the hand or foot. Your going to have likely broken a lot of the small bones therein and your body is not likely to react well to that. I obtained Mallet Finger in my martial arts class a couple of years ago and had to sit down or I would have fallen down.

[Flyndaran]

There are a stupid number of nerves in the hands and feet. That's a lot of little voices yelling, "AHHHHHHHHH!" for your brain to handle.
Crippling is a bit more than a minor sprain or even break. It's a "you injured it to the point of not functioning" problem.