As we all know, walking wears out the soles of shoes, but whether the wear of the soles of running s

The wear and tear of the soles of running shoes is indeed related to the running posture. The running position will determine where the sole will be worn, while the roughness of the road surface will determine the severity of the wear of the shoe. Running gait has a great impact on the degree of wear and tear of the sole, the wrong running posture will seriously wear the sole, we can also tell whether our running posture is correct by the condition and severity of the wear of the sole.

If the sole is worn out by 20 to 30% in 2-3 months, it can be judged that the running posture is problematic. When the worn part of the sole is mainly concentrated on the outside of the heel, then it can be judged that the runner will walk a little outward, which is commonly referred to as the outer figure-eight foot. When our running shoes have toe wear, we can tell that it is caused by running too fast and the big toe exerting force.

This is relatively normal wear and tear, and some are less normal wear and tear caused by running position.

Observing the sole, when the wear part of the sole is mainly concentrated in the forefoot, it is an excessive valgus type of wear, which mainly occurs in the arch of the foot.

Runners with insufficient strength, small muscle area, and poor body stability. If the arch of the foot is high and the ankle joint is relatively stiff, the sole will concentrate on the outer edge of the foot when it lands, which will easily cause wear and tear of the sole with a small excessive varus. This phenomenon usually results in fatigue fractures on the outside of the ball.

When wear occurs on the collar, it is usually caused by the size of the shoe. This abrasion can cause a lot of friction between the forefoot and the insole, which can cause heel blistering and fasciitis.

and other foot diseases, which may also lead to sharp pain in the shins.

If it's flat-soled.

For runners, the wear and tear of the sole will be more evenly distributed. Flatfoot is a congenital deformity of the foot, and walking on the foot for a long time can cause severe pain, so the wear and tear of the sole of the runner with flat feet is usually consistent. For the foot, the force is mainly concentrated in the second and third metacarpal bones.

For runners, the main part of the sole wear is in the middle of the forefoot. The area of wear will also be smaller than the sole of a normal arch runner.

It is important to know that the running posture will determine exactly where the shoe wears. The roughness of the road surface and the appearance will also determine whether the running shoes are seriously worn.

It may be that your running posture is not right, and the forefoot hits the ground when you run, so it will wear out your shoes.

These postures can cause physical symptoms:

The outside of the heel wears out quickly, and most of it is caused by walking inside the figure-eight.

If your sole is worn on the inside, the wear on the inside is noticeable, often when you walk outside.

If you walk with a trail, it may be a matter of habit.

Put the main weight on one leg.

The outside of the heel wears out quickly, and most of it is caused by walking inside the figure-eight. If this is the case with your shoes, then you may be inside the figure. Walking in this posture often makes it easy to concentrate too much pressure on the outside of the foot, increase its contact with the ground, and increase the pressure on the ankle and knee joints.

If your sole is worn on the inside, the wear on the inside is noticeable, often when you walk outside. When walking, he often takes the outside figure-eight step, and the heel hits the ground heavily on the inside, and the outside force is light. At the same time, the angle of the toes to valgus is too large, which will cause uneven force on the knee joint over time, and even lead to knee pain, accelerating its degeneration.

If you walk and drag, it may be a habit problem, or it may be a hip joint problem, such as acetabular dysplasia, the hip joint range of motion is relatively small, and when walking, the heel friction will be significantly accelerated.

In another case, if one heel wears out quickly, and the other heel is basically not worn, it means that you are putting the main weight on one leg, and there may be a problem with the less worn limb, such as unilateral knee meniscus injury, femoral head necrosis, knee osteoarthritis, etc.

Of course, there are other diseases, such as lumbar spine problems, ankle problems, hip problems, knee problems. Specific problems need to be analyzed on a case-by-case basis, and they must be combined with a doctor's physical examination.

1.Wear on the outside of the sole: high arched feet O-shaped legs.

The center of gravity of the shoe should be in the middle of the heel, and the inclination of about 4 degrees can be seen from the outside of the heel, but if the inclination is greater than 4 degrees, it means that the outside of the heel is stressed too much, and this situation is usually due to the high arched feet so that the excess weight tends to the outside of the foot, causing the outside of the shoe to wear and protrude.

2.Wear on the inside of the sole: flat feet and knee varus.

If the heel on the inside of the shoe is visibly worn, this may be caused by an inversion of the knee or flat feet. If the arch of the foot is flat, the foot will tilt inward when it hits the ground in the middle of the foot, causing the inner heel to wear and protrude.

3.Lateral wear of the big toe: hallux valgus.

Wear on the outside of the big toe is usually caused by hallux valgus, which is caused by a tilt of more than 15 degrees to the joint where the big toe joins the foot. This can cause the heel to lift prematurely, putting too much pressure on the big toe.

4.Wear on the toes: The foot is deformed.

The upper of the shoe clearly shows the traces of the big toe or little toe on the top, indicating that the sole of the foot is relatively wide and the shoe is too small. When the weight on the forefoot is uneven, the toe joints become unstable, causing the foot to deform. In addition, shoes that are too small can also lead to ingrown nails or claw toes.

The abrasion at the heel should be close to the outside

Walking normally, when the heel is ready to step on the ground, the heel bone will be slightly inverted, so the outside of the heel will touch the ground when landing, and over time, wear and tear will appear on the outside of the heel. If you notice wear elsewhere in the heel, it means that there is a problem with the heel ankle (i.e., the hindfoot).

Abrasion at the tip of the toe should be in the beam position near the medial big toe

Whether you're running with your midfoot or forefoot, when you're ready to push, your body's center of gravity shifts between your big toe and second toe, pushing your body out from this position.

So, normal wear and tear should occur a little below the ball of the big toe a little below the ball of the second toe. If you notice wear and tear in other places, it means that you have a problem with the midfoot to the forefoot, it may be a stuck angle of movement of the joint, or a problem with the arch of the foot.

This article is from Singularity's book "Running Without Injury".

The frayed soles on the outside of the shoe and the frayed soles on the inside of the shoe are not very normal, which indicates that our walking posture is incorrect.

First of all, I personally speaking, I am a person who loves to wear out the outside of the sole, because I have always been, as long as I throw away the old shoes, you will see that the outside of the sole is almost worn out, I am a person who loves to walk with my feet abandoned, although I think there is nothing, but my companion said, look at me when I walk, the feet are very uncomfortable, in fact, at the very beginning, I walked normally, but in junior high school, the non-mainstream is more popular, and then, I think the outer figure walking is more dragging, and then, I started to walk with a figure of eight, and I couldn't change it slowly, so that every pair of shoes I now have the outside worn out.

The worn soles on the inside should actually be something wrong with the posture of walking, I suggest that it is better to pay attention to yourself now, and when walking, hold on a little more, and try to change this, otherwise, it is not only a matter of costing shoes, but also being seen and made fun of.

And if we walk in the right posture, we will also effectively maintain our shoes, because compared to my classmates, it is really expensive to wear shoes, I can wear two pairs of shoes a year, and my classmates they can't wear a pair of shoes a year, so we must slowly correct this problem.

As a girl, I am also seriously aware of this problem, and I am slowly correcting it, and when choosing shoes, fitting is also a big problem, if the shoes do not fit, it will also lead to problems with your walking posture, and the degree of wear and tear on the shoes is also great.

If the two shoes have different levels of wear and tear and are in different places, it means that the strength of the two legs is different. And if it's all internal testing, it's possible that it's X-legged.

If the two shoes have different levels of wear, it means that you have different development when you walk, or even incorrect walking posture.

In fact, the soles of the shoes are almost the same, depending on the way the person wears it and the degree of wear, if the wear is too bad, it is easy to cause the shoes to slip and fall!

Some people walk inward is what we often call the inner eight, and the inner side of the sole of the person walking in this way is more worn. Some people have serious wear on the right sole, and some people have serious wear on the left sole, and such people have the possibility of slopes.

Walking in the figure eight is easy to concentrate too much pressure on the outside of the foot, increase its contact with the ground, increase the pressure on the ankle and knee joints, and after a long time, the leg bones are easy to deform, forming "O-shaped" legs.

Wear on the inside of the sole: joint damage or "X-shaped" legs, severe wear on the inside of the sole indicate that the heel is heavy on the ground when walking, and the force on the outside is light, which is often referred to as walking outside the eight.

The strong wear on the inside of the sole indicates that the inside of the heel is heavy when walking, and the outer force is light, which is easy to cause joint sprains.

If the sole is always grinding the inside, it may be that the leg is not normal or the outside is often grinded.

If the inside of the shoe is severely worn, it may be caused by an incorrect walking posture, and if the inside of the shoe is worn, it may be caused by an O-shaped leg.