I created a 3D pointing finger and I've attached the .ol file that you can load up into your Illustrate Symbols library. It's only a surface model, so you'll need to have your filters set to show surfaces to see it in the illustration and to have a thumbnail created for the symbol.
I created it using the free manikin that is available to Creo Parametric users. There's a bit of messing about to get it out but the process is as follows:
Create an assembly and assemble in the manikin.
Apply the posture that you want.
Export out the model as a STEP file (change from the default STEP format of Ap203_is if you want the colours to come through. I use Ap214_is)
Re-import the STEP file to Creo Parametric and then delete all the bits of the manikin you don't need.
Export out the remaining bits of the assembly as a shrinkwrap (to make it a single part)
Open the shrinkwrap
Save it as a Creo View PVS file
Grab the OL file that is created to go the PVS file and that is your hand geometry
I've probably got my quality settings too high as I go through this process, so the OL file is a bit big. I'll get around to fixing that one day.