"They are all negative," said Zhu Qidong.

Li Zheng nodded. If it was an infectious disease, he would have to wear a mask because the next operation would cause blood to splatter. But he didn't like wearing a mask because it not only affected his vision, but also might touch sterile areas.

Li Zheng picked up the oscillating saw and aimed it at the femoral neck.

“Squeak…”

The electric oscillating saw made a harsh sound, but Li Zheng's hands were steady and the femoral neck was quickly severed.

Take out the severed femoral head.

Li Zheng took a look and nodded, "The femoral head is severely deformed and the cartilage has been worn away."

A femoral head like this hurts just by looking at it.

Give the femoral head to the instrument technician to measure the diameter. Although it is not very accurate, it can still be used as a reference.

At this point, everyone recognized Li Zheng's ability. He was extremely professional and steady throughout the entire process. If those present were in Li Zheng's position, they would definitely not be able to be so calm.

Zhou Ming stood tall behind Li Zheng, nodding repeatedly as he looked at him.

Director Duan has a good vision!

Zhou Ming turned to look at Zhang Yong again, and seeing that he seemed to be lost in thought, he did not disturb him.

Next is to deal with the acetabulum.

This is where the real difficulty begins.

This patient has a true acetabulum and a superiorly positioned false acetabulum.

Now we need to really work on restoring the joint to a normal shape.

Li Zheng completely removed the scar tissue, osteophytes and residual articular cartilage in the true acetabulum, revealing the original bony structure of the acetabulum.

"The patient's acetabulum is shallow and flat, but the subchondral bone volume is severely insufficient, so structural bone grafting is needed to reconstruct the acetabulum," said Li Zheng.

This is all within everyone's expectations. The next step is to see how you remove the bones.

Everyone stared at Li Zheng.