If we're to build up our hybrid forms from the inside out, then looking at the outside of a boar isn't going to be much help. So instead I have started looking at images of the internal structures of boars, in particular the skeletal structures. This should hopefully give me a better idea of how the boar moves and looks from the inside rather than what it looks like on the outside. I also found several images of human skeletal structures for a visual comparison and to see how the hybrid might come together (see figure 1)
Figure 3 shows another model of the boars skeletal structure this time without the flesh outline. At first glance the leg structure in the boar may look completely different to that of a human but it isn't. Both consist of three joints; one at the hip, one at the knee and one at the ankle. From the outside it will look completely different but structurally they are quite similar. The only difference is that the back of the foot extends out more than a humans foot does.
The spine (also quite similar to a humans) appears to be slightly larger and stronger which could be used as a support for the muscle on the back and the pelvis appears to be much thinner than a humans.
Figure 4 is an example of the boars skull. From it we can see that at the front of the mouth there are four teeth in the lower jaw but not in the upper. The rest of the teeth are set further back in the mouth away from the front four. There are also two sets of tusks. The lower tusks protrude up out of the jaw whilst the upper tusks protrude down and out to the sides of the jaws behind the lower tusks. The nasal passage run along the top of the skull down from the eyes sockets which are located on either side of the skull. The shape of the skull is much different from that of a human being more triangular in shape rather than round.
Figure 1 - http://www.kappamedical.com/wall.htm
Figure 2 - http://www.archeozoo.org/en-article134.html
Figure 3 - http://www.maremmaguide.com/wild-boar-facts.html
Figure 4 - http://www.iol.ie/~creature/BiologicalAdaptations.htm