Apply bone position to all keyframes?

Hello.

I have a running animation made with multiple keyframes. I positioned the character in such a way where his hands are open while running, but I need his hands to be clenched fists.

The hands are made of a lot of bones and it is a tad annoying to position them exactly the same way for each keyframe.

Is there a way to apply the bone positions for his hands to all keyframes without changing the other bones? or do I have to position them manually/remake the animation?

Not sure what kind of a Rigg your using…
normally a good hand Rigg will have one bone that can be Rotated to Rotate all the Finger bones into a curled Fist possion… this way you only have to key frame that one bone… not all the finger bones…

watch these videos to understand what I’m saying…

https://www.youtube.com/watch?v=MQTREfQSlBU&index=22&list=PL58E9A0927AB357EF


start about 5 minutes into video to see the hand rigging he does here…