I firmly believe in shoes being the culprit with back, hip, leg, and foot issues. In the 4 years since my knee replacement surgery, I have gone thru shoes like you wouldn't believe, and I'm still trying to find shoes that are comfortable on my feet. I absolutely cannot wear Easy Spirit, Skechers, Vionic, Merrell, and Clark shoes (all of the shoes I wore to work prior to my surgery, were older style Clarks with the accordion type heal).
The only shoes I can wear comfortably now, are Nike tennis shoes, Alegria thong sandals, and a new pair of David Tate sandals. The problematic shoes have caused cramping in my feet and legs, shin splints, knee and hip pain. My last pair of Skechers---and I do mean LAST pair---caused extreme tension in my knee, which is just now subsiding after 3 weeks.
I have ordered 6 pair of shoes from Zappos in the last 3 months, and returned 5 of them.