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  Clap, the hilt is placed in the palm of the main knife.

  Chang Jiawei narrowed his eyes slightly behind the magnifying glass, locked his sight on the position of the surgical incision, and slowly cut the skin with the sharp knife in his hand. The incision is set on the side of the vertebra for longitudinal incision, and the length should reach about two vertebral bodies.

   When he didn\'t speak, his senior seemed to be turned into a surgical machine like other teachers. Xie Wanying, while observing the movements of the chief surgeon, assists the chief surgeon with Dr. Liu to support the chief surgeon at any time.

  Like other surgical operations, after the main knife cuts the skin, a helper immediately presses the incision with gauze to stop the bleeding.

  The main knife was replaced with the electric knife in his hand at this time, and the subcutaneous tissue was incised one after another and the bleeding was stopped by electrocautery.

   The very familiar creaking sound and the creaking sound of turning on the breakpoint sounded again in the operating room.

  The doctors\' concentration is all on the layer by layer.

  The lower layer of the subcutaneous tissue is the back muscles of the human body, and here are the trapezius latissimus dorsi size rhombus machine. Several layers of muscle groups are cut in an orderly manner. After cutting the muscle, retract the hook to expose the surgical field.

   There is no third aid, the second aid is on top. Xie Wanying held the retractor in both hands and carefully placed it on the left and right sides of the knife edge to open the muscles.

   Today\'s surgery is different from the abdominal surgery that she has done many times before. The abdomen is like a big sack with a deep area that contains a lot of stuff. The operation on the back does not have such a deep and wide space. After the hook is pulled down, you can really feel a tighter force, which will soon reach the bone area.

  Once the operation starts, everyone is busy with work, and no one will take into account that she is a girl. Yes, even Senior Chang, who claims to be sympathetic to girls, doesn\'t care if her hands are sore.

   Explain that as long as you are a boss, no matter how good you are on weekdays, when you arrive on the operating table, you will only become the same thing: you are not polite.

  The teachers only pay attention to the surgical area in front of them. If they find that she is not pulling properly, they will immediately reprimand and correct her ruthlessly.

   Not long after the operation, everyone noticed that Xie was not scolded as always.

   Zhang Tinghai\'s lowered mouth hooked: That\'s right, classmate Xie. Xie is back, the same as before, so it will never be boring in Xie\'s operating room.

   Dr. Liu groaned twice in his heart, and then glanced at her from the corner of his eyes: Unexpectedly, this student Xie is not only fluent in academic explanations, but also very energetic in performing the operation, and there is not a drop of sweat on his forehead. He said that it is really suitable for their orthopedics.

   The strength is enough. It must be admitted that the back muscles are not very easy to pull, and there is not much slack for the hands to rest. The fatigue of the person pulling the hook increases sharply in seconds.

  Chang Jiawei, who became silent, finally spoke again and said, "Hold on."

   Don\'t think that Senior Chang is taking special care of her, this girl, and they forgot who was pulling the hook here without raising their heads. It\'s just that a simple and good person is tired of watching his subordinates pull.

   After the operation has progressed to a certain extent, the main surgeon determines that the surgical field in front of him has reached a sufficient area. Chang Jiawei issued another command: "Change the fixed retractor."

   These words landed, and Dr. Liu asked the nurse to fix the retractor. Retractor is the academic name for retractor. Ordinary retractors rely on manual continuous pulling and are more tiring. It is best to fix the retractors themselves without being pulled by others. Such retractors are called fixed retractors.

   (end of this chapter)