What is spondylolysis, spondylolisthesis?

A Chinese character of “月” expresses the meaning of body, and “要” expresses the meaning of summarization.
The waist is an important place of the body.  It supports the upper body equivalent to 70% of weight.

上半身（体重の70％）：the weight of the upper body(70% of entire weight)、からだのかなめ：the main point of the body、腰：waist

In particular, a burden is placed on the 5th lumbar spine.

If movement of the back curvature accompanied by the rapid convolution from slouch is repeatedly performed at the age of around ten, what will happen?

Gymnastics, Judo, baseball, weight lifting, soccer, volleyball, basketball, etc.

It seems that the projection of the upper bone works like leverage with a slouching posture, and power always applies on the same place of the lower bone and suffers a fracture.
This resembles very much the state that exactly, while an airplane flies with what 100,000 times, the body causes metal fatigue by the power of a wind and soon fall into disrepair.
This is spondylolysis.

It occurs most commonly on a boy aged around 10 years.

It has been reported by a certain research paper that the disaggregation has one per three of the members of a boy’s baseball team.
Although a hereditary element (congenital) is considered as a cause, many are considered to be a stress fracture which happens by the intense sporting activities repeated at a child term.

If an X-ray is taken by the doctor of orthopedics, it will become a photograph like the left.
The bone enclosed with yellow is as if it were close to the form of a terrier dog.

If spondylolysis is caused, as red shows, around the neck of this dog will become a broken form.

When the pain of the waist continues for a long time, let's consult an orthopedist.

Next, after spondyloysis, spondylolisthesis occurs.

Why is a bone slippery in front?

It is because that the fourth and the fifth bones of the waist are easy to move of the belly from the back physiologically. In this balance, we can stand with two foot.

What will happen when spondylolysis occurs?

Backache

It seems that there is hardly appeal against the pain of the hip, the pain which reaches the tip of a foot, and a feeling of numbness, etc. which are seen in adult.

There is a pain around the fourth and the fifth lumber spine. In addition, when pushed around the fourth and the fifth lumber spine on the stomach, a pain comes out.
What will happen when spondylolisthesis occurs?
It seems that there is the same pain as separation. You have to treat it in childhood since a pain becomes severe after growing up.

The exercises which a burden is places on the waist are not so good.

Let’s try not to do the exercises like the animation below. Weightlifting is also not good for the children of the growth phase.