I use magnetic UK band on my QH mare. She wears them on her pasterns (with the magnet at the back) on both fronts for navic and general stiffness. I've no idea if they work or not as I'm too scared to take them off now just incase
I like these bands as they can be worn 24/7 and don't rub. The magnet in them is certainly stronger than any others I've tried.
i used them, the bands and magnetic over reach boots for collateral ligament damage in the front feet. i don't know whether they work or not but my horse is sound and working again. i think when your horse is in a situation you just shuck everything at them and pray !