Not sure if you have Legend shots there, but they are used fairly often up here for arthritic issues, many of my clients swear by them. I agree with everyone on the bute thing too!! Although there are many reason/times to intervene with this drug, your horse's health will be better served in the long run if you can be more natural with your maintenance of the issue.
It is my understanding that Adequan is for the joint and cartilage where as Legend is an injectable HA source which works on the synovial fluid around the joint. May want to look into which would suit the situation better.
Also, I personally use a straight MSM suppliment (no added glucosamine) for my guy with Arthritis and he is noticably more comfortable on it than without.
Hope that helps :)
I wouldnt wrap the legs, but I do rub him down with an Arnica rub after I ride.