Recently, my dog had a pretty bad limp. I took her to my vet and nothing was found on her x-rays. She was put on bed rest for a week. Still no improvement. I ended up taking her to a specialist and the x-ray results were inconclusive. Long story short, they wanted to do $3000 surgery to see if they could find anything. I declined and put her on Glucosamine instead. After about 1 1/2 months her limp went away and hasen't been back!!