Gluco and MSM great for the joints
I had the ACL replaced in my right knee 2 years ago and as long as I use glucosamine and MSM, my knees are okay. Once you establish a schedule and use the two daily, your joints(in my case, my knees) improved and there was no pain. When I stopped using the two, that is when I can feel the difference. I have had an x-ray on my knee and there is a bit of degenerative arthritis, but that is the risk you run when you have an injury to a joint I have resumed glucosamine and MSM and I can get through cardio and play softball as usual. In my opinion, the two suppliments are great. I use the liquid glucosamine so that it gets to the joints quicker.
Peace