Chronic Lameness - Cool to the Touch - Circulation Problems?
I'll try to make a very long story short. I have an 18-year-old who has been lame for years now, somewhat progressively worsening, but for the most part holding largely steady. Unrideable due to his problem. It's a lower leg lameness, but not true heel pain, and various vets have diagnosed it as "navicular," "low heels," "thin soles," "soft tissue damage," and a myriad of other problems, none of which actually fit his situation. Multiple visits to four different vets, with radiographs and ultrasounds, have proved inconclusive. All standard treatments have failed to bring him more than very minimal and short term relief: coffin bone injections, navicular bursa injections, mesotherapy and regular back injections (he has significant back pain as well, and I think it's a chicken-and-egg thing with his legs and back playing off each other and making each other worse), isoxsuprine, Tildren, joint supplements, magnesium supplement, daily bute, eggbar shoes, wedge shoes, soft pads, barefoot...even tried freezing his nerves but it didn't take. No one knows what he hell is wrong with him, and we've tried all the recommended treatments for things that *could* be wrong with him, to no avail.
I've noticed recently, though, that his legs are cool to the touch--cooler than the other horses'. Same with his ears. And maybe I'm grasping at straws, and maybe it's just within the realm of normal equine body temperature deviation, but I wonder if he could have some kind of circulation problem that all of the vets have missed, and that is at least contributing to his lamenes issues? He's never had thermography as a diagnostic; no one has ever recommended it. And I thought that isoxsuprine was used specifically to improve blood flow, and it didn't do a thing for him. But has anyone heard of such a thing as I just described--is it a tenable theory?