How to bend bones without banking right or left

hi…

can you plz help me in this…
Bones bending happening nicely with IK.
But once pole target applied
banking happening which i don’t want.
When i move the ctl, i want the bones to bend
but without banking right or left side even after
applying pole target.

plz tell me if its possible…
thank you

Hello;

So, first thing I’d recommend: usually, for solving many Rigging issues (inlcuding the set up of Inverse Kinematics), it is fundamental to Display the Axes of the Bones. With the Armature Object Selected (or any Bone in the Armature), go to Properties Editor > Data Tab > Viewport Display Panel > Check Axes Option

Also, notice that the Pole Target will make the X Axis of all the Bones present on the IK Chain (defined, in the case of IK Bone Constraint, by Chain Length setting), to point towards it (Pole Target’s current Location, on Pose Mode).

That said, you probably have got a problem with Bone Roll setting. This can be adjusted, for every Bone, on Edit Mode. Select Bone(s), 3D Viewport Editor > Sidebar Region > Item Tab > Transform Panel > Tail: Length. You may Hold Alt if editing mulitple Bones at once.

From this timestamp, there is a clear explanation of that Pole Target behavior:

Did that solve the issue?