Why does medical use bone marrow puncture needle also can wear sternum?

Bone marrow aspiration has important diagnostic value for blood diseases, especially leukemia. Bone marrow examination can confirm different types of diseases. It is also helpful for the diagnosis of certain parasitic and bacterial diseases.

In addition, for long-term fever, liver, spleen, lymph node enlargement can be performed bone marrow biopsy to confirm the diagnosis. Bone marrow puncture can be performed by iliac crest puncture, sternum puncture, tibia puncture and spinous process puncture. Due to the osteoporosis of the iliac crest, the thin cortex, and more bone marrow fluid, puncture is safe and easy. Bone marrow aspiration is not recommended in hemophilia, severe bleeding tendency, local skin infection, etc. The sternal and spinous process puncture can also be used for older children.

Many people think that bone piercing is a very scary thing, in fact, the method is very simple. Firstly, select the puncture site, inject a small amount of anesthetic locally, and extract a small drop of bone marrow tissue with a bone piercing needle. A skilled doctor can perform the entire process of bone penetration in just a few minutes.

After extracting the bone marrow, the child can get up and move after pressing the puncture point to stop bleeding. During the extraction of bone marrow, there may be local acid swelling sensation, which can be tolerated by the child. There is no harm to children's health, and it will not cause long-term damage. Because BONE MARROW IS A tissue WITH STRONG regenerative capacity of the human body, and the amount of bone marrow extracted is very small, there is no need to worry about the damage of "vitality", and there is no need to supplement nutrients.

Why do we need a bone marrow biopsy?

A bone marrow biopsy, or bone marrow biopsy, is A small, cylindrical piece of bone marrow about 0.5 to 1 centimeter long taken with a special needle FOR pathological examination. The operation method is basically the same as that of bone marrow puncture, and the removed material maintains the intact bone marrow structure, which can make up for the deficiency of bone marrow puncture. It has the following advantages:

1) Maintain the natural structure of hematopoietic tissue to facilitate the determination of the ratio of red pulp and adipose tissue;

2) To comprehensively understand the degree of myelodysplasia, density and layout of nucleated cells;

3) Can avoid the dilution of blood sinus;

4) It can assist in the diagnosis of myelofibrosis, hairy cell leukemia, bone marrow necrosis and bone marrow steatosis, and can indicate the transformation of myelodysplastic syndrome to acute myelogenous leukemia, and has a role in the differentiation of "dry draining". Therefore, bone marrow biopsy can not only understand the composition of bone marrow cells and the distribution of primitive cells, but also observe the cell morphology, which is convenient to make pathological diagnosis, and provide an important diagnostic basis for diseases that are difficult to be diagnosed, such as aplastic anemia, myelodysplastic syndrome, bone marrow aspiration and so on.

Bone marrow aspiration and bone marrow biopsy have their own advantages and disadvantages. They are two important methods for the diagnosis of hematological diseases that cannot be replaced by each other. Bone marrow biopsy is also easy to perform, and can be carried out smoothly for older children, but it is difficult to carry out for infants. The biopsy procedure may be slightly longer than the bone marrow aspiration, and the biopsy procedure may feel acid swelling. After puncture pressure bandage hemostasis, normal activities

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