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   This kind of concentration is a very powerful thing.

  Look at it again, people outside the operating table, like Cao Yong and Tao Zhijie, were not disturbed by the crowd behind them, and their attention was distracted from the operation. Only one of the group of orthopaedics and Ren Chongda spoke. If the others didn\'t hear them, they would all concentrate on the operation.

   Thinking about the shocking results brought by the previous surgery, everyone knows that this operation will be extremely exciting and may be included in the classic cases of orthopedics.

  Removing the bone is the focus of completing the first half of the operation, and will soon reach the focus of the second half of the operation. Removing a piece of bone is equivalent to breaking the spine. This phenomenon is like a bridge with a broken deck and a pier that can no longer be used. Now the doctor wants to find a way to fill in the defect, and it is to take out the materials Xie classmates and the others visited in Chang Jiawei\'s office the day before yesterday.

  The human body is like a machine. If it is broken, the missing original parts can only be replaced by others. The artificial vertebral body that the doctor tried to create is an external part that needs to be considered. If possible, look for similar self-made parts. If you have a tooth, even if the tooth is too missing, the doctor will always try to keep the root of the tooth and put a crown. The original one is the same as the machine, and it is a last resort to replace other materials.

   I talked about several artificial vertebral bodies that day, but today the doctor chose the titanium cage commonly used in clinics as usual. As mentioned a little last time, titanium cages may be the simplest equipment, but the most advanced ones are difficult to adjust themselves, so it is better to rely on the doctor\'s brain and hand skills to adjust. The length of the titanium cage can be tailored by the doctor according to the needs of the patient. The determination of this length again depends on the doctor\'s brain.

  The work of measuring equipment, doctors have been doing it before surgery based on CT images and other imaging data combined with clinical examinations, and doctors probably have a spectrum for this during surgery. It\'s just that this length must only be estimated first, and then fine-tuned after surgery.

  The length of the titanium cage is not only based on the length of the defect after the diseased bone is removed, the doctor needs to refer to other factors. When the titanium cage is taken out, as long as you see that the interior is hollow, you will understand that this thing is much more than just the appearance. The reason why it is not made into a solid one is that the hollow core has to be filled with bones.

  Filling the gaps in the human body is not the same as the outsiders imagine that where objects are missing and where they are filled, the entire human body is full of living cells, not dead objects. One of the most important features of living organisms is that they can continuously metabolize life. The technical term is tissue cell regeneration.

  Doctors need to effectively use the vitality of this life to help the human body to restore health, rather than rigging dead things to repair. You can refer to botany. The seeds are sprinkled into the soil to allow them to grow. This principle can be called bone fusion in orthopedics. The transplanted bone tissue is placed in the defected bone environment for filling, allowing its cells to regenerate naturally and then fuse with the original bone tissue. In the same way, the titanium cage is filled with bone fragments to allow the osteocytes to regenerate and the original bone to become a new fusion.

   Don\'t think that a bone that is hard and not soft is a dead thing.

   (end of this chapter)