Buying shoes online is a risky business, especially for me. I'm 71 years old and my feet have changed a lot in the last five years. My toes are curled in and slightly longer than when I was young (I ran 5-10 miles a day, five days a week for decades). Sizes have also changed, reflecting that the shoes are manufactured and sold in many countries at the same time. To make matters worse, I broke my hip and was in rehab at the time I booked it. I tried putting on my running shoes but the pain was…