Some of the best rehab for horses that are thin, lacking muscle, otherwise disadvantaged is sympathetic, light riding. You use a saddle which fits the shape of the horse’s spine and pad the ever-loving shit out of it to take up space while creating the perfect cushion. As the horse puts meat on its bones, you gradually reduce the amount of padding until you get to the point where you don’t need any.
This is not a new concept. It’s been around for years.
If I had waited until my current horse was finished putting meat on her bones to have a saddle fitted, she’d still be standing in the damn aisle of the barn learning to lower her head/turn off her brachiocephalicus. I would have missed some of the most fun rides and experiences ever and she’d be completely loopy from not getting out to experience the world.
Wait and do ground work? FTS. Fit the saddle to the horse that will result from correct work, show the rider how to pad it and how to check for pad removal over the current months and help riders to ride their horses instead of being told their horse is broken and needs witchcraft and voodoo before it can possibly be ridden.
Current horse is in same saddle as 9.5 years ago. It’s gone through super thick padding to thin 1 layer saddle pad and had a shim or 2 moved around inside it and a couple gullet plate changes. I fully expect horse to go into her 30s wearing the same (same model if it wears out) saddle because it fits her back shape and if I keep her fit and working properly, that isn’t going to change a lot.
Recently started working another “disadvantaged” horse the same way. It will be interesting to see if this umpteenth “disadvantaged” horse responds the same way or whether she has read the modern thoughts on not being ridden while “disadvantaged” and will refuse to pack on abs and back/topline while being ridden while disadvantaged. LoL