The design of MBT shoes is beneficial to my bad knee. I do not know why they work, but I can walk without limping.
It feels easier to walk up hills and stairs, too. I hear they are designed for plantar fasciitis, but I don't have that condition. A friend who has had both hips replaced swears by MBT also.
This specific shoe is good looking enough to be a little dressy. It's sturdy enough to withstand my rough treatment, too.
The only strange thing about MBT shoes is the unavoidable rocking you do when standing. I believe that adjusting to this slight imbalance is good for the core muscles. It builds up your balance.