One of my dogs, an 11 year old golden retriever, unfortunately when I was out of town a few weeks ago, injured one of her back legs. I suspect it was due to thumping down too hard on the hardwood floor in the hallway and her front paws sliding when she pushed herself to get up. The vet's x-ray revealed severe arthritis in the hips. This was a SUCH A BUMMER to learn because I've been diligently giving her supplements like turmeric and Acv for a few years now to prevent arthritis.
As soon as I got home, I covered every bare floor with runners I bought at Lowe's. I focused on the hallways and areas in between rugs. I also now use a support under her belly for all stairs and curbs when we go on walks. She's recovered very well, thankfully.
What's also helped is weight loss on freeze-dried raw food. Unfortunately, she had started to get diarrhea on the frozen raw food and I then put her on venison and lentil (grain-free) kibble, where she immediately gained weight.
I also give her turmeric curcumin, boswellia and sea mussel extract supplements and she gets a massage every day or two. She started making remarkable improvement with boswellia, which I added about 5 days ago. I give her a capsule morning and night with food.