No one knows whether these tiny differences will lead to any effect. After all, no doctor used to care so much.
Today is different. There is a person with a stubborn mind who is fussing about something unusual.
People in the orthopedics department may be able to see some clues before people in other departments.
When it comes to screwing in the pedicles, orthopedic surgeons are most afraid of hitting the nerve roots. The EMG monitoring during surgery is to help orthopedic surgeons monitor this. Once there is a violent fluctuation of the waveform on the EMG, which indicates explosive electrical activity, it is certain that the nerve root has been mechanically stimulated. The worse result is that the pedicles have been ruptured.
Generally, when orthopedic surgeons perform screw fixation, there will be some fluctuations in the waveform. The reason is that doctors estimate the position with their naked eyes, which is basically impossible to be very accurate. In addition, the bones are hard, and when they are fixed, they cannot be sure that the nail will enter the most suitable structural position. If the process is difficult, increasing the force will produce vibration waves that affect the nerve roots. Therefore, during the process of pedicle screw fixation, a wave of fluctuations in the graph is normal as long as it is not too large.
Now these orthopedic surgeons looked at the EMG and said: Wow, this is the smoothest graph I have ever seen, with almost no fluctuations. The slight fluctuations are negligible and last for a very short time. This means that the nail has landed on the bone at the right position, hitting the most suitable point on the bone structure. So it is just like hammering a nail into a concrete wall, hitting that precise structural position, da da da, the process must be extremely smooth.
Chang Jiawei was very relaxed. It seemed that after a few clicks, all the screws were driven in. He felt his hands were shaking. It was not because of fear, but because of excitement.
Playing smoothly is like playing a game and killing monsters, it makes your blood boil and your spirits rise.
When people from other departments saw this situation, even though they did not have the professional knowledge of an orthopedic surgeon, they could tell that the surgeon had made the right move.
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For the last screw, Chang Jiawei did not forget to let Xie try his hand.
Xie Wanying could not hide her happiness as she could try the strenuous work of orthopedic surgery herself.
The group of people stared at her with their eyebrows flying like the singing of a skylark, and their hearts seemed to tremble, as if they were facing the scene in a movie that was about to reach the climax after all the ups and downs.
Everyone could only think that Chang Jiawei, the playboy, wanted to let her fight, maybe because he wanted to please a girl, or he really wanted to see if she was just a paper strategist besides her theoretical knowledge. It was questionable whether her hands could keep up with her supercomputing brain. Orthopedics was not like other departments, and it required higher skills for girls to do physical work. As for the latter, everyone was also very interested in seeing what was going on.
After getting the tools, Xie Wanying grabbed the flat handle of the wrench, pushed in the locking screw, inserted the sleeve that the teacher had previously drilled on the bone, and began to tighten.
A group of people first observed that she was very skilled in tightening the screws and seemed to be unusually familiar with the performance of the screws: What is the situation - ?
Does she often screw in screws at home? Is her home a factory?
She is good at screwing screws. When she was young, she played with her father to repair cars, and her little hands often fiddled with all kinds of screws. The threads of screws are particular. From childhood to adulthood, she often heard her father and other colleagues at home discussing the uses and properties of various screws when they discussed car repair.
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