Great concept, I think the illustration just needs to be strengthened a bit. If you resubmitted it with a stronger, cleaner line style, I bet this could win. The concept is hilarious and I love the "Figure 1" approach. I would definitely buy it.
horrible execution, you should have the foot stepping on the crack and then on the back have a the vertebrae run all the way down the back and then show the break. THEN i would consider buying it. this just needs to be cleaned up some.