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I have this skeleton for a cow :

cow skeleton

With this property for both IK bones :

ik properties

The problem that I have is that when moving the front leg, the bone directly connected to my bone with IK constraints will not rotate. The angle will stay exactly the same. If I increase the chain length, then they will all be stiff joints, only the last joint will rotate. You can see what I mean in this video. The backleg works perfectly fine. I already deleted it all and restarted but I have the same issue.

[EDIT] Here is the file :

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I would do the following steps:

Correctly align the bones with a ShiftN > Global +X Axis:

enter image description here

Bend the knees a bit more so that it knows how it is supposed to bend them:

enter image description here

Put the head of the controller at the same location as the tail of the lowerleg, so that it doesn't jump as soon as you switch to Pose mode:

enter image description here

Correct the Pole Angle:

enter image description here

It should work:

enter image description here

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  • $\begingroup$ Thank you that did it ! Even though when I enter 0° in the pool angle, the foot doesn't get in the right position on my side. Thank you ! $\endgroup$
    – Monique Dumont
    Commented Oct 26, 2022 at 16:06

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