If there is no autologous bone, allogeneic bone can be used as a substitute, that is, bones from other people can be used. However, it is definitely best if there is no autologous bone.
The doctor took out a small medical stainless steel cylindrical jar with broken bones and artificial bone particles in it, and stirred them together.
Artificial bones are made by adding collagen and other mechanical properties to the mineral components to make the biomaterial more consistent with the mechanical structure of the human body.
This kind of manual work suddenly reminds me of decorators.
Of course, doctors’ manual work is much more advanced. Without a solid accumulation of medical knowledge, it is impossible to support medical manual work. After all, human life is different from dead objects. Human life is always active and the risk is high. The storage capacity and computing power of the brain of an excellent doctor compared to that of an ordinary decorator is like the difference between a supercomputer and an ordinary computer.
The titanium cage is filled with bone blocks. The serrations at the upper and lower ends of the titanium cage mixed with autologous bone are embedded in the upper and lower vertebrae to fix them and prevent them from moving. To be on the safe side, the doctor will add a nail rod system to reinforce it.
The work of the decorator is here again. It is like how to drive a nail into the wall at home. Bones are like cement walls. First, use a hammer to drill holes on the pedicles on both sides of the upper and lower vertebrae, then drill in the holes, and then screw in self-tapping screws. Metal rods are passed through the middle of these screws to reinforce the two sides.
These are all physically demanding jobs. Fortunately, just like home decoration, if there are tools, it is easier for women to do it themselves. This is the same as the electric skull drill for neurosurgery.
After understanding the principle of the above surgical process, Xie Wanying could start to use her ability to assist the surgeon when cutting the length of the titanium cage. With the previous cut showing her extraordinary calculation ability, the surgeon now trusts the parameters she provides.
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"It needs to be a little shorter." Xie Wanying estimated.
The surgeon moved and cut the hair according to the length she indicated.
Doctor Liu couldn't figure out how this little difference was calculated, but he knew that this little difference might work like the miracle he had just done, so he wouldn't torture Xie foolishly. Besides, the surgeon was there to check.
After cutting, orthopedic filler is put into the hollow of the titanium cage. How much to fill is also a skill. Too full is not good, and too empty is not good. Moderate filling is the most important. This ratio can only be estimated by the doctor.
This operation is relatively simple, so after the surgeon demonstrated it, he let Xie do it.
The people around continued to watch secretly, thinking that this playboy dared to let go like this, and wondered if he really gave special treatment to girls.
Holding tweezers, Xie Wanying carefully picked up pieces of autologous bone and artificial bone and placed them into the titanium cage. When placing them, she made sure to place them evenly, and pressed them like leveling the soil to ensure that the seeds were fully mixed in the soil.
After this step is completed, the nail rod system is installed.
Drill holes at the locations of the pedicles. Which location is better? Xie will give us a rough idea.
The people behind watched and couldn't help but wonder who the teacher was.
To be honest, these tiny differences of only one or two millimeters and micro-angle deviations are definitely ignored by other orthopedic surgeons during surgery. I will give you an estimate. It is all done with the naked eye, and it is difficult to see and estimate the tiny millimeter distance. Most doctors cannot calculate the micro-differences to the decimal point like computers.
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