Helpful wonderful physicists, I have more data, and thus (of course! I'm a scientist) another question. Pretty please? Love you all!

Update: There is a large collection under my ankle that is newish, and obviously seeped from somewhere, so I took another look in the full-length mirror (rather than looking at my leg, you see; made me wonder if individual tigers know they're striped) and saw amazing wave-form patterns in the bruising that strongly support my blast-being-transferred-through-a-lipohydrostatic-medium theory. I can't draw in html so bear with me.

Recap: The impact site is on the front of my shin going top-o-centrically from the middle of the shin (in the vertical dimension) outwards and downwards about 5 cm, usually less than a cm wide and possibly slightly deeper and wider at the top. It has gone from a kind of skinned-knee-ish scrape to dark thick flat mostly numb stripe that looks for all the world as if it had had stitches, which it didn't. It sits on a little pillow of swelling whose bruising has now turned yellow, which makes it absolutely repulsive. The nurse actually called it Dreadful.

Anyway, the point is that I hit pretty much in parallel to the plane of the shinbones, at an angle that sent the blast inwards and upwards.

The greatest area of swelling, which still looks pretty bad, goes upward and inward from the impact site to the very top of my calf, and doesn't wrap around to the side or up into my knee.

The dark bruising on the inside of my left calf and around to the shin on that side, that seemed to me to go pretty much from above the knee to the ankle, turned out to go all the way to the sole of my foot but* - critical datum here- *is darker in thin stripes that are parallel to the impact scrape and equally spaced, like ripples in a pond. Of Mrr.

The huge and still very purple bruise in my popliteal region (relax - back of the knee, down you scoundrels) turns out to be counter-coup, the injury from the blast going right through me to the other side. You get this in brain injuries too - shake like a bowlful of jelly, we do, and our insides rattle around inside our outsides and whack against the other side - the other inside of our outside, that is. Ya folla?

The bruising that was creeping from my outer lower left (neither shin nor calf- what IS that part called?) up the outside of my thigh in a kind of arc around my knee joint also resoleved into parallel stripes going outward from the impact site. That is, what I was seeing as a vertical stripe of bruising (when standing up and my knee isn't bent) turns out to be a series of parellel-to-the-impact-area stripes that together comprise a vertical set of bruises running together in my perception.

I love data. They sure distract you from actuality when you want them to, without taking you out of reality at all!

OK, so, here's the next question: the stripes from the blast petered out in about, say, a half meter either side of the impact, anywhere the blast had a half-meter to travel in. When it didn't, as in directly through my leg across the knee from it, looks to have been the worst damaged after the shin itself. But now, can we verify our calculations of the blast strength?
And once it's in joules or something meaningful to you helpful physicists, can you translate that into either kilocalories (it was like your shin at 17 big macs in basically 0 seconds) or square meters of area cleared if you were in helpful rather than destructive demolitions?