Unfortunately yes! My right knee has been rebuilt twice and my left is now starting to have wear issues. When I had the knee rebuilt 20+ yrs ago the first time my ortho told me about the chondroiten and glucosamine. Since that time I have lived on the stuff to help prevent the inevitable replacement! Research says it helps, just not sure how it works. I take 1 pain free tablet that has both glucosamine and chondroiten each day, along with 1 glocosamine sulfate tablet each day(glucosamine I read is the more vital of the two and in powder form it is supposed to be absorbed better they say), along with a swallow of the liquid form of pain free. May be overkill, but my ortho says I should have had a replacement already, so something is working. The cracking by itself is not an indication of an issue, but if you hear grinding or a gravely sound that is a wear issue with no real opportunity to improve it or reverse it, you can only manage it. Good luck!
