Li Zheng nodded and smiled: "It's simple, you'll know when you go and see it!"

Bao Youshan took a deep breath and rubbed his face hard with his hands. He was completely unable to describe his mood.

Even Zhang Lei, who was standing next to him, began to question his life after hearing what Li Zheng said. Although he wasn't a doctor, he had seen many surgeries and could tell which ones were simple and which ones were difficult. But when it came to Li Zheng, it seemed like there were no difficult surgeries.

Zhang Lei had a strong sense of urgency. He had to improve himself. Li Zheng's current ability was probably just the tip of the iceberg. When he really broke out, he might not even be able to see his back. How could he follow him then?

It is impossible for a super genius like Li Zheng to stay in the county hospital forever!

Bao Youshan didn't want to say anything more and hurried out to watch the operation.

Li Zheng and Chen Dayong returned to the emergency department.

…

Operating Room No. 3.

Hip replacement surgery is underway.

Bao Youshan stretched his head and saw that the joint had been dislocated and the femoral neck had been severed. Duan Jianhui began to deal with the acetabulum.

Duan Jianhui scraped the inside of the acetabulum vigorously with a periosteal elevator. His heart tightened, and he said, "The acetabulum's bone sclerosis is even more severe than I imagined! There's almost no cartilage left, just hardened bone."

The human hip joint is composed of a round femoral head placed in a semicircular acetabulum. If the acetabulum bone hardens, the femoral head will also be worn and damaged, or femoral head necrosis will also wear out the acetabulum, causing osteoarthritis. This conservative treatment will hardly have a good effect and basically requires artificial joint replacement.

Xiang Yuanzhong nodded and said, "The preoperative X-ray showed that there is indeed bone sclerosis on the rim of the acetabulum. Can it be directly ground away?"

Duan Jianhui shook his head and said, "It's possible to grind it, but it's very difficult. This is the patient with the thickest bone sclerosis I've ever treated."

He sighed inwardly. The problem was that the county hospital did not have a CT scan. Preoperative evaluation was often insufficient, causing difficulties during the operation.

Although it was difficult, Duan Jianhui was confident that he could grind it off. He started with the smallest acetabular rasp and gradually increased the size.

After grinding each size, I would wipe the bone debris with gauze. From the 36mm diameter acetabular rasp to size 52, the hardened bone was basically ground away, exposing the cancellous bone, and blood began to seep out.

"It looks like it's almost done!" Xiang Yuanzhong relaxed. As long as the bone starts to bleed, the acetabulum prosthesis can be installed.

The acetabular prosthesis is divided into an outer cup and an inner liner. The outer cup is made of cobalt-molybdenum alloy and the inner liner is made of polyethylene.

"52 outer cup." Duan Jianhui shouted.

The technician immediately installed the outer cup onto the connecting rod.

Duan Jianhui took it, aligned the outer cup with the acetabulum, and hammered it in with a hammer.

The sound is already quite solid.

"Okay, let's try it out."

Duan Jianhui loosened the connecting rod, but it didn't come loose, so he pulled it out with force.

Boo.

The acetabulum was pulled out immediately.

"Is this not a big deal?" Xiang Yuanzhong asked.

Duan Jianhui also frowned. A proper acetabulum press fit requires that the acetabulum cannot be pulled out, requiring a gentle tap on the end of the connecting rod with a hammer to remove it.

I haven't put much force into it, so it's definitely not serious.

"Hit again!"

Duan Jianhui put the external cup into the acetabulum again.

Ding ding ding.

A hammering.

Release it again and it will be more stable.

Duan Jianhui pulled hard.

Boo.

The outer cup came out again.

This is a bit overwhelming!

Duan Jianhui and Xiang Yuanzhong looked at each other and saw confusion and even a hint of panic in each other's eyes.

"What...what's going on?" Xiang Yuanzhong asked a little nervously.

Duan Jianhui's forehead began to sweat. He turned around and the circulating nurse immediately wiped it off for him.

"Check the acetabulum again."

Duan Jianhui removed the external cup and carefully inspected the acetabulum, finding no soft tissue incarceration. He then used an electric scalpel to carefully trim the acetabulum margin.

After confirming that there was no problem, he picked up the acetabular cup and pushed it in again. This time he increased the force of the tapping, and the hollow sound at the beginning gradually turned into a very firm sound.

"It should be fine this time!" Duan Jianhui checked again.

Boo!

It still comes out with one pull.

In addition to Duan Jianhui and Xiang Yuanzhong, there were two other doctors on the stage, including Guo Weiqiang and another attending physician, as well as the instrumentation technician. Everyone felt a little nervous.

This is obviously the same model, why can't it be tightened?

Bao Youshan, watching from the audience, was also puzzled. The hospital had performed two surgeries last year, and both had gone relatively smoothly. However, those patients had femoral neck fractures, which were less challenging than osteoarthritis.

Li Zheng also said that joint replacement is simple, but every patient has his or her own characteristics, and this patient's case is not simple at all!

"Why not increase the size to a larger one?" Xiang Yuanzhong suggested in a low voice.

His words made the engineer nervous.

Joint prostheses are all disposable. If this outer cup is not used, it will have to be scrapped. They are all imported products and are not cheap. The cost will be charged to the instrument technician, and a month's work will be in vain.

Duan Jianhui shook his head and said, "If we increase the size further, the acetabulum might be worn through, and then we'd have to use bone cement to fill it. But this patient is under 60 years old, and the lifespan of a bone cement prosthesis is only about 10 years at most. It will definitely need to be revised and replaced again, which would be much more difficult and more traumatic..."

"Have you prepared a bone cement prosthesis?" Duan Jianhui asked the instrument technician. Although he was worried, he had no choice.

The instrument technician shook his head and said, "Director Duan, you said that for such a young patient, you absolutely wouldn't want a bone cement prosthesis, so... I didn't bring it."

This chapter is not over yet, please click on the next page to continue reading!