check collisions of only certain bones in a figure

Is there a way to check collisions of only certain objects.
I have a figure with 30 bones. I want to check to see if two bones in the figure are colliding. I don’t want the system to waste time checking all the other bones.

Right now I’m using colliders on the bones and OnTriggerEnter and checking to see if the bones I’m worried about are colliding. Is there a more elegant way to do this?

Thanks,

Parenting colliders to the bone transforms is the only solution.