How to Set Up an IK Pole Target in Blender

Setting up a pole target for an Inverse Kinematics (IK) chain in Blender allows you to control the bending direction of joints like elbows and knees. This guide walks you through creating a dedicated pole bone, assigning it within your armature's IK constraint, and adjusting the pole angle to ensure your character's limbs bend correctly without unwanted twisting.

Step 1: Create the Pole Target Bone

  1. Select your armature and enter Edit Mode (Tab).
  2. Select the joint where the limb bends (for example, the knee or elbow).
  3. Press E to extrude a new bone forward from the knee (or backward from the elbow) along the appropriate axis.
  4. Separate the new bone from the chain by pressing Alt + P and selecting Clear Parent.
  5. Move the new bone slightly away from the rig so it sits directly in front of or behind the joint.
  6. In the Bone Properties tab, name the bone clearly (e.g., Pole_Knee.L or Pole_Elbow.R).

Step 2: Assign the Pole Target to the IK Constraint

  1. Switch to Pose Mode (Ctrl + Tab).
  2. Select the bone that holds the IK Constraint (typically the lower leg/shin or lower arm bone).
  3. Go to the Bone Constraint Properties tab in the Sidebar panel.
  4. Locate the Inverse Kinematics constraint.
  5. In the Pole Target field, select your main Armature object.
  6. In the Bone field directly below it, select your newly created pole bone (Pole_Knee.L).

Step 3: Adjust the Pole Angle

Once assigned, the limb bone may twist awkwardly out of position. Fix this by adjusting the alignment angle:

  1. Remain in Pose Mode with the IK-constrained bone selected.
  2. Go back to the Inverse Kinematics constraint settings.
  3. Locate the Pole Angle slider.
  4. Change the value until the limb aligns correctly with your rig. Typically, this value needs to be set to 90°, -90°, or 180°.

Step 4: Test the Rig

  1. Grab (G) the main IK target control bone to bend the limb.
  2. Select and move the pole target bone.
  3. Verify that the joint (knee or elbow) points directly toward the pole target bone as it moves.