We are pretty sure that this was caused by slick floors plus overgrown nails. Nails are trimmed, and I put down fleece blankets and yoga mats in her favorite parts of the house. So hopefully things will improve soon?Aw, poor baby.
When I got the rex most of them had sore hocks, really bad sore hocks. Most of them have healed now, only some small scabs where there used to be bleeding sores. Good flooring and quick treatment helped them immensely.

Can I ask what treatment(s) you used?