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.
I grew up with a dachshund. When we kids went away to college and our dog was quite old, she sat at my mom's feet all day while mom worked from home. Mom had no more kids to spoil so she spoiled out dog. :) Princess had lost some teeth teeth and didn't have a great appetite. So my mom scrambled eggs for Princess every morning. Scrambled eggs were soft and nutritious and appealing to Princess. She didn't have significant health issues but was nearly blind. She lived to be almost 17!