is there any way to print a 3D model of a upper limb with bones AND all of the ligaments?

Hi, i dont find the button to turn the processing ON, it dissapears! Anyone that can help me?

HAVE ANYONE CREATED STL FILE OF CARILAGE AND MENISCI  

Thanks a lot for this tutorial !!     However, using the script I keep getting error messages (I already changed the above mentioned modification).   I get an error saying    Python: Traceback (most recent call last):   File "/Users/koendefoort/Desktop/bottom.blend/shrinkwrap loop.txt", line 26, in <module>   File "/Applications/Blender.app/Contents/Resources/3.4/scripts/modules/bpy/ops.py", line 113, in __call__     ret = _op_call(self.idname_py(), None, kw)