This doctor is already middle-aged, and he's only just started practicing medicine.

Chapter 54: Did things go wrong?!
August 10th! Monday, the start of the week.

However, Lu Cheng took leave and rode his electric scooter to the 'dormitory' where Chen Song and Tong Yuan'an were!
Tong Yuan'an gave Lu Cheng his room number, and Lu Cheng went straight there via elevator and knocked on the door.

As soon as Lu Cheng opened the door, he discovered that the practice room in Tong Yuan'an's house was infinitely more professional than the one in his own home.

A standard operating table, one meter long and two meters wide, equipped with a microscope, a complete set of brand-new microsurgical instruments, and various types of hand surgery sutures for practice.

The value of these sutures alone is at least eight thousand, and each one costs more than ten yuan.

The most expensive thread Lu Cheng usually buys for practice sewing is only three yuan a piece; he doesn't dare to be extravagant anymore...

A small shadowless lamp, fresh pig's trotters...

Looking at so many treasures, Lu Cheng swallowed hard with envy, "Teacher Tong...you..."

"This was renovated with the funding we applied for. Since it's for a research project, we need to prepare a lot of basic things. And we can take all of these things with us when the project is completed."

"You've come at the perfect time. I had already prepared the pig's trotters after I woke up this morning, all of them are hind trotters. And the professional hand surgery measuring instrument I ordered has also arrived, so we can start testing today..."

"For this type of surgical procedure to be used in clinical practice, there must be prior animal testing data recorded. In this way, even if there is a medical dispute, we can silence the expert team by showing that we have thoroughly practiced the procedure and have objective data on record."

"The patient's suturing still had problems, which was due to objective risks, not to our own lack of skill or insufficient preparation beforehand."

Tong Yuan'an was wearing loose pajamas and had already adjusted the air conditioner to a comfortable temperature.

He glanced at the fine sweat on Lu Cheng's face and said, "Little Lu, go and wash up again first. Specimen practice should be treated with the same reverence as a serious surgery. Physical preparation is also very important."

"Okay, Teacher Tong, I'll go wash my face again." Although Lu Cheng had come by bike, the heat in August was intense, like a scorching sun.

Lu Cheng wasn't fat, but he was still covered in sweat.

After cooling down for about twenty minutes, Tong Yuan'an and Lu Cheng drank two more cups of coffee. Their physical strength and energy were at their peak, and they were in the best condition.

The two walked back from the living room to the control room.

Tong Yuanan said, "The Tajima suture technique you learned is, of course, a control group, but you still need to perform well. This technique is used to treat our own patients."

"A doctor's skills have no nationality in clinical practice, so you can never push them to their limits; the more proficient you are, the better..."

"Even if our research project fails, the patients still benefit. Do you understand?"

After listening, Lu Cheng nodded slightly and looked at his 'skill point balance: 42 points'.

Because Lu Cheng is performing more surgeries, his average daily skill point gain rate has reached 6 points in the past week.

This is roughly what he accumulated in a week.

[Unnamed suture technique (Proficient 10/10)]

Lu Cheng suddenly had a thought, and it immediately changed to [Unnamed Suturing Technique (Specialization 10/20) (Skill Points -30), has reached the upper limit of basic suturing skills, and cannot be improved further.]

Skill Points Balance: 12.3!

Lu Cheng then distributed the resources bit by bit again!
Half a minute later!

【缝合系技能：缝合术（专精14/20）（技能点-3）、肌腱缝合术（专精13/20）（技能点-5）、改良kessler缝合法（熟练10/10）、津下缝合术（包括滑动型）（熟练10/10）、改良Tang法（专精3/20）、肌腱未命名缝合技法（专精14/20）（技能点-4）】

Yes, this is the limit that Lu Cheng can reach.

"Are you ready?" Tong Yuan'an asked Lu Cheng.

Lu Cheng nodded: "Ready, Teacher Tong."

“Then you can suture first… After you’re done, I’ll use our hospital’s new suturing technique to finish, and then we’ll measure and compare the tensile strength of these tendons.” Tong Yuan’an waved his chubby hand, gesturing for Lu Cheng to go first. Lu Cheng nodded.

Since it wasn't a formal operating room, all that was needed was to wear a sterile glove; there was no need to actually wear a sterile surgical gown.

Lu Cheng's suturing technique was clearly highly skilled, which matched Tong Yuan'an's expectations for Lu Cheng's learning speed.

So after glancing at it a few times, he went out.

The suturing procedure is a very private matter. Since it is not surgery, no assistant is needed. Letting Lu Cheng suture alone allows him to concentrate better.

After Lu Cheng finished sewing up about five pig's feet, he switched places with Tong Yuan'an. He stayed in the living room to drink tea, while Tong Yuan'an stayed in the operating room to focus on the 'new technique' of sewing.

About forty minutes later, Tong Yuan'an came out of the "operation room" with tweezers in his hand: "Xiao Lu, I'm done. You must be curious about how to evaluate core bio-power, right?"

"Come in, let's study together."

In Tong Yuan'an's eyes, Lu Cheng's talent already made him a professional hand surgeon. If it weren't for the research project he was undertaking, he would have already taught Lu Cheng other hand surgery techniques.

Of course, Lu Cheng's talent still has great potential, so we should put it to use right away.

Lu Cheng walked in.

Tong Yuan'an explained: "The core biomechanical indicators of hand surgical suturing techniques are tensile strength, fracture end gap control, and sliding resistance."

"Generally speaking, current tendon suturing techniques can only be considered acceptable if they can withstand a tensile force of ≥35N immediately after surgery, a tear gap of ≤0.5mm at the cut ends when the load is 0.5N, and a pulley friction force of ≤1.5N."

"Entering the live animal testing phase."

"Look, these are the five pig trotter tendons I operated on. Their tensile strength has exceeded 90N..."

“改良kessler的抗张力大概是40-55N，津下缝合技法是65-85N之间，改良Tang法则是90-110N。”

"The tensile strength at break of the modified Tang method is 150.25±10.50 N, and that of the modified Tsushita suture method is 125.3±11.5 N."

"Our team's tensile strength at break is!" Tong Yuan'an directly ripped the tendon sutures...

"Based on these calculations, the tendon toughness is 14 N/mm, which is even higher than the modified Tang method..."

"We continue measuring and then calculate the average result."

Tong Yuan'an explained things to Lu Cheng very professionally and meticulously. Finally, after entering the data into the statistical table prepared by Tong Yuan'an, the comprehensive conclusion was drawn:
【2mm裂隙抗张强度：Tong法：108.40±7.52N；改良Tang法：100.30±8.20 N；改良津下法；52.6±7.4 N】

[Tensile strength at break: Tong method: 166.31±11.50 N; Modified Tang method: 150.25±10.50 N; Modified Tsushita method: 125.3±11.5 N]

【肌腱韧度：Tong法：14.21±1.34N/mm；改良Tang法：12.55±1.25 N/mm；改良津下法：8.3±1.8 N/mm】

"Well, so you're quite capable, aren't you, Teacher Tong?" Tong Yuan'an asked Lu Cheng after looking at the list of forms, his face full of kindness.

Lu Cheng nodded: "Mm."

"Okay, next test will be on you."

“2mm裂隙抗张强度：100、110、126、119…嗯…120N.”

Tong Yuan'an glanced at Lu Cheng: "Tensile strength at break: 160, 180, 195 N..."

After seeing these two sets of data, Tong Yuan'an immediately fell silent, his face extremely pale, his chubby face like a dumpling, filled with remorse.

(End of this chapter)