Neutral gait, which has a reasonable amount of pronation, will usually show wear on the outside heel portion of the shoe. This occurs due to initial heel strike being on the outside of the heel and is considered “normal”.
Supination occurs when weight is placed on the outside of the foot while walking or running. When the opposite happens, and a person shifts their weight from the heel to the forefoot, it is termed pronation.
If the inner side of the heel and forefoot show more wear, you're an overpronator. If your shoes have more wear on the outside edge, you're an underpronator.
Look at the soles of your shoes and identify the areas where the wear is most pronounced. If the outer part of your sole is the most worn out, then you are a supinator, like about 10% of the population. If it is the inner part of your sole that is the most worn out, then you are a pronator, like 45% of the population.
Look at your footprint. If your foot appears flat, you're more likely to overpronate. If you can see a higher arch, then you may be underpronating.
Causes of Foot Supination
Foot supination happens when you don't use the proper muscles to walk correctly. People who develop this issue struggle with pushing or activating the right muscles in their feet as they walk. It could be due to a number of factors, but usually, it's caused by a muscle imbalance in the feet.
Not undoing your laces. If when you put your shoes on, you force your heel over the padded heel counter with excessive force, this can wear away at the lining of the shoe. It will happen higher up at the heel collar rather than the heel counter below.
You'll need a needle and thread, some glue, and a patch of durable cloth. Instructables user neffk used denim, but you can use any type as long as it's strong, but not too thick. After you've cut the cloth to the right size, just glue it over the lining on the heel, then stitch over the top edge to make sure it stays.
As a general rule of thumb, shoes should be replaced every 8-12 months for most people or every 500-700 kilometres for running shoes.
Holes in the ball of the shoe or the toe box can be evidence of excess pressure due to pivoting of the foot caused by overpronation or oversupination. Wear in the heel and sock lining can be a result of your heel tilting or the shoe being too small.
By replacing the rubber heel savers and sole pads as they wear down you prevent wear from reaching the rubber soles and heels, greatly extending the usable life of your rubber-soled shoes.
Most likely, uneven wear will be a result of an overpronating gait (when your foot rolls inwards to the big toe side) or a supinating, or underpronating gait (where your foot rolls outwards towards the little toe).
Take your shoes off your feet and set them side by side on a level surface. Get down so your eyes are level with the surface and check to see if there's a visible slant to the soles at the heels. If there is, you've got a worn out pair of shoes on your hands.
Excessive supination can cause ankle pain, plantar fasciitis and stress higher up the body. This can lead to knee pain, hip pain and even back pain. The negative effects of supination can be particularly severe for runners who put their lower limbs through repetitive strain.
To help treat excessive supination of the foot: Select lightweight shoes with extra cushioning and ample room in the toes. Wear running shoes specifically designed for underpronators or supinators. Be careful because most running shoes cater to people who overpronate, as overpronation is more common than supination.
Underpronation ― also called supination ― is the opposite. With underpronation, your feet turn excessively outward when you run or walk. This can cause your spine and hips to get out of alignment, which can lead to lower back pain.
When it comes to how often you should wear your favorite pair of footwear, Dan recommends trying to rotate every other day. This not only extends the life of the shoes, but it's best for your feet. “The repetitive stresses of wearing the same shoes day after day, hour after hour, can eventually make us uncomfortable.
If you are walking 30 minutes a day or an average of three to four hours a week, replace your shoes every six months. If you are walking 60 minutes a day or an average of seven hours a week, replace your shoes every three months. Plan on replacing your fitness walking shoes every three to six months, or by 500 miles.
The traditional rule of elegant dressing recommended seven pairs of shoes, that is, as many pairs as there are days of the week.
Overpronator: The bottoms of the shoes of overpronators show wear on the inside edges of your heels and on the inside edges of the balls of your feet (the side toward the big toe).
While shoes won't start to deteriorate immediately after buying them, you should begin using them six to 12 months after your purchase. According to Stump, this is when they start to break down little by little.
Generally, the rougher the sole, the more it's fit for off-road conditions. If you wear work boots on off-road, then the sole would wear out quite quickly. The same happens when you wear off-road shoes on concrete, pavement, or tarmac.
Shoe boxes give your shoes the highest level of protection from dust, sunlight and temperature extremes that can sap leather shoes of their flexibility. Boxing vintage shoes and boots after stuffing and wrapping them will help preserve fine leather, cork and other organic materials.
According to several professional organizers, the top shelf of your closet is one of the best places to store shoes. Lowenheim recommends storing your shoes up there in shoeboxes with corresponding pictures taped to the front, while Nancy Heller of Manhattan-based Goodbye Clutter suggests a display.
Hydrolysis is the chemical breakdown of the PU polymer and the resulting physical breakdown or crumbling of the PU sole by the attack of water (usually in vapour form), occurring over a period of several years (even when the shoes are in store!). This process is accelerated by warmth and high humidity.