Rehab is all about taking an unhealthy hoof and improving it. This is quicker and easier without a shoe on the foot and that's the main reason the horses here are barefoot - its about hoof health, pure and simple.
His feet today are starting to look more like functioning hooves. His palmar hoof is becoming stronger and that starts with a healthier frog and more supportive heel and digital cushion.
Looking at the lower photo you can see that there is a steeper angle of new growth immediately below the hairline. This is clear at the toe but the improved growth is also happening at the back of the foot. This is why the hoof pastern axis is better in the more recent photo.
In Bruno's case the toe will be shorter, the foot less under-run and the palmar hoof more supportive.
As with the other foot the biggest change here is to his frog. His heels and bars, which had folded over, are much stronger and his foot is beginning to develop some much-needed concavity.
Lots of other things need to happen as well, not least a shorter toe and the heels becoming less under-run, but a healthier frog is the essential first step.
This foot was nowhere near as weak as his other but there were still balance issues and its nice to see the foot becoming more evenly loaded.