Simply put, bone cement is a substitute material for artificial bone, shoulder, arm and leg. Compared with bone cement and the popular filling method this year, fat filling is more durable, its appearance and position will not change easily, and it will not be absorbed by the human body. Like fat filling, the survival and absorption of fat can not be ignored.

The technology of bone cement has not been popularized, because it is still somewhat different from our human bones. The biggest problem is that the filling of bone cement in the human body may cause high pressure in the bone marrow cavity, or it may become loose after a long time. But with the development of modern science and technology, all these can be innovated and developed for the benefit of our mankind.

So today I'm going to introduce you to a new filling technology "bone cement". What exactly does it do? What are the advantages of development?

Bone cement is a kind of biomaterial used to fill the gap between bone and implant or bone cavity, which has self-coagulation characteristics. The chemical name is polymethyl methacrylate PMMA, also known as acrylic bone cement. Bone cement has been widely used in orthopedics since Charney successfully performed total hip replacement with bone cement for the first time in 1958. Bone cement fixation can ensure the immediate stability of prosthesis after operation, and there is no fretting at the interface between bone tissue, bone cement and prosthesis, allowing early postoperative load bearing, and the effect is positive.

First of all, compared with the common hyaluronic acid and fat filling, the bone cement is more stable, the bone is almost completely attached, and there will be no side effects such as stagnant water, which has little effect on the original skull. It is a very safe surgical method.

Bone cement has gone through three stages of development, and the technical changes are self-evident, only to see that it is becoming more and more mature. Let's explain its characteristics in detail.

Characteristics of 1 substitute bone cement technology;

Non-low viscosity bone cement, bone cement and bone are not completely embedded; Stir the bone cement by hand; Finger pressure fills the medullary cavity, and the injection pressure is not enough; Without medullary cavity irrigation, blood fragments are easy to mix with bone cement, and the bone cement filling is uneven and different in thickness, and the bone cement is interrupted in some areas, and there is no bone cement filling between bone and prosthesis; The inner edge of the femoral stem prosthesis has an acute angle, which can cut bone cement.

Technical characteristics of the second generation bone cement;

Low viscosity bone cement; Stir the bone cement by hand; Bone cement gun with pressure injection; The medullary cavity plug is used at the distal end of the medullary cavity; ⑤ The inner edge of the femoral stem prosthesis is round, and the bone cement is not cut.

The characteristics of the third generation bone cement technology: low viscosity bone cement, bone cement and bone are fully intertwined; Vacuum centrifugal stirring reduces the porosity of bone cement and increases the mechanical strength, and the bubbles mixed in bone cement overflow through centrifugation; Bone cement gun is injected under pressure, which makes bone cement have strong penetration and realize micro-lock with bone; The medullary cavity plug is used at the distal end of the medullary cavity; The prosthesis adopts a central device, and the thickness of the bone cement layer around the prosthesis handle is uniform; Pulse pressure is used to flush the medullary cavity to remove blood clots and debris; The stem of the prosthesis is coated with bone cement in advance.

In fact, the development level of the first and second generations of 1 is still relatively immature, which is also related to the times and environment at that time. People's technology has not reached a certain level. At that time, it was unimaginable for ordinary people. How can bone cement replace our own bones? The perfection of the third generation technology can be seen from the viscosity, mechanism of action and technical treatment of details of bone cement.

So is it possible to be foolproof with good technology? Of course, the answer is no, the technical level is relatively hard-core, but for ourselves, we must understand.

Its safety, which is also our most noteworthy point, has passed the certification of American SPA and American Food and Drug Administration. As for materials, it is necessary to strictly check the qualified rate of materials to ensure that they are harmless to the human body before they are allowed to be used in hospitals.

So what is its main filling part?

1, forehead filling

2. Head filling

3, the back of the head filling

All three are filled with bone cement. It is worth mentioning that if there are muscles on both sides of the filling site, it cannot be filled.

As far as the filling effect is concerned, bone cement can achieve the effect of fullness and correction, which is more suitable for the adaptability of our body. This kind of shaping is relatively lasting, a good living habit, and can even be used for life.

More attention can be paid to Sina Weibo: Natsume has an article.