I'm not sure about reverse engineering, but direct modeling definitely yes. 3D Max has a lot of plugins, so probably you can find something. Also, using SolidWork with Cosmos plugin you can do finite-element analysis.
In general it is very difficult to model a 3D human skull in CAD software. I advise you to import a 3D point cloud containing the Cartesian coordinates of the 3D human skull using Digitized Shape Editor in CATIA, then you can generate the 3D mesh (the polygonal mesh), after that you can using the Quick Surface Reconstruction generate the surface starting form the previous generated mesh. Then you can establish the 3D solid from the constructed surface. The previous procedure is called (reverse engineering).
Approximate method: you can using several images of 3D and 2D human skull (imported to CATIA) generate Spline curves corresponding to the external and internal boundaries of the skull (in several parallel plans) and then construct a set (series) of surfaces (using for example multi-sections Surface)...You can then combine these surfaces in one surface. Finally, you can construct the 3D solid model of the skull.