Monday and Tuesday Saga got about 20-30 minutes of hand grazing 10 feet from his stall, and both times, he was noticeably worse after. Since then, he has literally not been out of his stall... and he seems to be doing markedly better. He's standing solidly on his RF now, at least some of the time, and when he moves around the stall the limp is not as painfully evident as it was. He's not sweating constantly from the pain anymore either, so that's good. I'm re-wrapping the RF every other day with standing wraps, then putting the splint on over it, then duct-taping the whole mess together. It's ungainly but it seems to help him be more comfortable, and he's being a saint about the whole process, thank goodness.
The wrap, pre-splint (this is actually the gamgee wrap the vet put on, but at $50 per wrap, I'm now using plain standing wraps. DIY and all that!)
Here's the splint that hubby made (the vet was impressed... we could have a sideline business!) The bottom corners are cut out so that the PVC won't put pressure on his heel bulbs.
Here's how the splint fits on. It has to touch the ground at the bottom in order to provide support.
Saga models the finished duct-taped mass while Fuzzypony fills his water buckets. He has been getting immense amounts of joy out of messing with the hose while his buckets are being filled.
The really strange thing is, even if he has a tiiiiny hairline fracture on a sesamoid bone (which often don't show up on rads for several weeks after they've happened) it should not be causing him this much pain. I'm more inclined to think that all this is caused by some combination of the lesion in the ligament that we DO know about, the infection in the fetlock (which seems to have cleared up, thank goodness), and probably something going on (DDFT or impar ligament) in the foot that we cannot see. But of course, this is all pure speculation. We really have very little to go off of, except how lame he is. Poor pony.