Vast Improvement....
My mare has recently been diagnosed with arthriris in her left hock (albeit very early). I now use Bio-Flow tendon boots for around 8 hours a day. I sought loads of advice on this and it seems you don't have to put magnets on the actual joint, just make sure they are over major arteries as they work on improving circulation. By putting them on the tendon it stimulates blood flow through the whole leg. Have noticed a bog improvement in her range of motion and they must be working as her legs are quite warm when I take them off.
I also use Cortaflex HA, Cider apple vinegar and cod liver oil and touch wood we are doing really well. Just started xc on monday and have been doing dressage, fun rides and aiming for h/trials now. Difficult to pinpoint which is doing the trick, but I don't mind using them all if we get the right result. 3 months ago people were telling me she was just grumpy and moody and I should sell her. She couldn't canter, gallop or jump any more. I knew there was something wrong with her and it wasn't just her temperament to misbehave. After she was diagnosed with arthritis the same people told me she was knackered and I should get rid of her. I am so pleased I didn't listen to them as I love her to pieces. Its costly maintaining her but she is worth every penny!
NB - I was told not to use magnets during exercise or whilst travelling in case she cuts herself and the blood will take longer to clot. I use Bio-Flow as these work on circular magnet fields and they are apparently the original products that have been tried and tested on humans.