How to prevent specific bones in an ik rig to bend? So, i created an ik rig for my arm model and it looks good except for the forearm part. As seen in the picture below, the forearm consists out of three bones.

But when i move the hand, the forearm bones bend, which i dont want.(picture below)

how do i prevent them from bending?
As IK is calculated after all modifier stacks, every bone of an IK chain has a properties panel in which you can configure its behaviour.