Look at the heel. Most people will wear out the side of the heel over time. When the heel becomes angled, it will alter every step you take and can cause pain in the leg or back. Shoe repair stores may be able to fix the heel. If not, replace the shoe.

Running shoes can cause pain before they look worn. This is because they lose the capacity to absorb shock. The guideline to replace running shoes is every 350 to 500 miles. Running shoes older than one year old may also cause pain because of changes in the sole with exposure to humidity or heat. Save running shoes for running only and it will prolong the life of the shoe. Old running shoes can be used for walking.

Athletic shoes: There are four types of running shoes: motion control, stability, neutral/cushioning, and minimalist. The correct shoe for you is based on arch type and biomechanics. One way to test the shoe is to walk and jog in it. You can also balance on one leg and do a one-legged squat. The shoe should feel comfortable right away and these tests should feel easier in the right shoe.

For court sports, a sport-specific shoe is better than a running shoe because it will provide more side-to-side support. For cleats, it can be helpful to pick a shoe that allows you to add an arch support.

Minimalist shoes are used for forefoot running to simulate “barefoot” running. To avoid injury, it's best to slowly add time and to get guidance for proper form.

Sandals: Flip flops are good for short distance walking only. Choose sandals with strapstha cover more of the foot and/or wrap around the anke.

Boots may fit loosely and not provide adequate foot support. Adding arch support can improve comfort.