I know that feeling! I once called my mare "Ms. Self-Destruct" because she'd find every way possible to get an injury. She once rubbed on a fencerail and got a 3" splinter in her neck that I had to pull out, flush, and then find a way to protect from flies (SWAT is wonderful stuff, but I put it around a wound and not in a wound.) I had another one rub on a T-post and 'stab' herself in the flank -- luckily the wound was only a subcutaneous hole without muscle or vital organ damage. The vet cleaned it out and my job was to use a catheter tip syringe to flush it out with betadine, twice per day. Ahh, horses. =) And no T-posts in my life now.
(Edit: I figure you would have seen this, but I'm going to point it out just in case.) I'm looking at the other leg - left hind. That first picture really appears as if there's swelling in the upper cannon, the hock possibly all the way up to the gaskin. There also appears to be a darker patch of hair, which I'm pretty sure indicates bruising? Do you see that? If that's new, it's vet time and I wouldn't ride. Keep him active on a lead, roundpen, or lunge line if you must, and that will help keep everything moving.
As for the scratches, flush any puncture wounds (anywhere you see skin loss, or a hole with pink or red) with betadine and surround it with SWAT if it's exposed. Vetericyn products are also good, I used the equine spray and spray-gel to treat a one-off case of scratches. Be sure to keep the legs clean. Hydrogen peroxide is good to use if you believe a wound might start to have necrotic tissue or proud flesh. I don't think that will be an issue here, but it's something to consider.
No diet, no hoof. No hoof, no horse. No horse is not an option!
Last edited by Feathers7; 06-12-2019 at 05:27 PM.