Finger IK

If the Finger IK option was enabled when the MHX rig was generated, the finger can be posed with IK joints instead of the finger bones.

If the Finger IK influence is zero, the finger is posed with the long finger bones or the individual finger links. It can also be posed with morphs.

If the Finger IK influence is one, the finger is posed with the finger IK joints. Morphs and the long finger bones have no effect on the finger pose.

The IK influence is changed with the buttons in the FK/IK Fingers Tongue panel. It can also be changed in the Properties panel. For more information about how to use finger IK, see the blog post on Finger IK and Tongue IK.