Department of Psychology Forensic

Chapter 132 Forensic Medicine Is Really Not Made By Humans!
"What's wrong?"

Xia Yan stared at the corpse. He is not a professional forensic doctor, but he has been a criminal police officer for several years, so he still has some basic knowledge of autopsy.

"These corpse spots appear on the lower, uncompressed part of the corpse, which is consistent with the shape of the corpse lying down. I don't think there's anything wrong with it!"

Xia Yan spoke again.

After finishing speaking, he kept staring at Zhou Zheng, wanting to hear Zhou Zheng's opinion.

"Captain Xia, what do you mean, you agree that this is a traffic accident?" Zhou Zheng asked suddenly.

"No, I didn't mean that..." Xia Yan quickly denied, and said, "I just don't know what's wrong."

"The problem is too big and too obvious!" Zhou Zheng took a deep breath, and just as he was about to say something, he saw Xia Yan's resentful eyes, and subconsciously asked, "Captain Xia, what's wrong with you?"

"It's easy to have no friends if you talk like this." Xia Yan's face is not so good-looking, he just expressed that he can't see the problem, Zhou Zheng said that the problem is obvious, isn't this bullying?

"I don't have any friends myself." Zhou Zheng shook his head and said something that made Xia Yan speechless, "I have nothing to lose."

"..." Xia Yan wanted to say something, especially that they were friends, but, thinking that after all, they had only known each other for a few days, it seemed that saying this was too fast, so he simply held back.

Suddenly, the scene became quiet, and the atmosphere was a little delicate.

"Captain Xia, look, the deceased's injuries were mainly concentrated on the brain, elbows and knees. Apart from these, there was no damage. His back looked like patches of red, but in fact they were corpse spots, and there was no substantial damage. injury." Zhou Zheng opened his mouth to explain, saying: "This is obviously not an injury from a traffic accident."

"Hmm..." Xia Yan listened seriously.

"The victim was found on the road. As long as it is confirmed that he did not die in a traffic accident, then he can be sure that he died of homicide, and the body was thrown on the road. This is a criminal case." Zhou Zheng said solemnly.

"Your logic is correct, then you must first prove that the deceased did not die in a traffic accident." Xia Yan understood Zhou Zheng's meaning.

"Injuries caused by traffic accidents are related to many factors, such as vehicle speed, vehicle type, body posture at the time of the collision, the part of the collision, the direction of travel of the vehicle and the person, etc. In the same traffic accident, even multiple types of injuries can be caused." Zhou Zhengxuan Xu said: "There are five types of injuries commonly seen in traffic accidents, namely impact injuries, falls, crush injuries, stretch injuries, and abrasion injuries, but none of these injuries were found in the deceased."

"Hmm..." Xia Yan listened with gusto, and could understand it, but couldn't catch up.

"Let's talk about it one by one, let's talk about the impact injury first." Zhou Zheng pointed to the back of the deceased's head, and said: "The impact injury refers to the injury caused by a certain part of the car directly hitting the human body, sometimes called a direct impact injury. The high frequency of occurrence is the direct cause of injury or death caused by the vehicle, but in the case of the deceased, there is no such direct cause.”

"I saw red spots on the forehead of the deceased just now." Xia Yan interrupted quickly: "Is it possible that the vehicle directly hit the forehead of the deceased?"

"Are you serious?" Zhou Zheng was stunned for a moment, staring at Xia Yan like he was looking at a fool, he couldn't even believe his ears.

"Cough cough cough..." Xia Yan cleared his throat and said, "I knew that kind of posture was unlikely to appear, but everything must be clearly stated."

In fact, he just wanted to hear what Zhou Zheng had to say, but he didn't expect to be despised by Zhou Zheng.

For a while, I couldn't tell the pain in my heart.

"Since the posture is mentioned, let's talk about the posture of the impact injury."

Zhou Zheng nodded and was not affected.

"The most typical impact injury is the bumper damage caused by the bumper of the car hitting the lower limbs of the human body, that is, the shape of the damage presents the shape of the bumper. If a fracture occurs, the fracture will be wedge-shaped, with the tip pointing in the direction of the wheel."

"Among them, bumper damage caused by cars mostly occurs at the calf position."

"SUVs, vans and buses mostly occur in the thighs."

"However, considering that the wheels still accelerate when the car hits, the front bumper will rise 4-5cm upwards with the force, and the position of the damage caused by the collision will be higher."

"Correspondingly, during emergency braking, the position of the bumper will move down by about 10cm, causing less damage."

"Let's look at the body again."

Zhou Zheng pointed towards the knee of the corpse, following his movements, Xia Yan also looked over.

"The deceased only had a slight bruise on the knee, and no other injuries on either the calf or the thigh. This does not conform to the form of injury at the time of the vehicle impact."

"Hmm..." Xia Yan nodded repeatedly.

"Let's talk about the craniocerebral injury mentioned by Team Xia just now. If the deceased was hit on the forehead by a vehicle, then there are two possibilities in the normal form."

When Zhou Zheng spoke, he stretched out two fingers, and then retracted one.

"The first type is that after the deceased was hit by a car, the front of the car scooped up the body, causing the forehead to hit the windshield, causing head injury."

"However, in this case, there must be severe impact injuries to the lower extremities, and often accompanied by broken windshields, broken glass may be seen on the ground or puncture cuts near the wound."

"Obviously not that possibility."

Immediately, Zhou Zheng raised his second finger again, his thoughts turned completely, and the whole case was rapidly evolving in his mind.

"Secondly, the deceased was squatted on the ground and was hit, so there should be a large area of ​​scratches on his body, and when he rolled over after receiving the impact, it is impossible for the body to have no damage on the back."

"That is to say..."

"Regardless of the manner in which the deceased suffered such a head impact in a traffic accident, his physical injuries should not have been so small."

"This shows that this is not the damage caused by a traffic accident, but that the murderer killed the body and threw the body on the road, hoping to be hit by other vehicles in order to cover up his crime."

Zhou Zheng's eyes flickered with brilliance. He had already seen through the whole case, and his confidence in solving the case within a day was doubled.

"Amazing!" Xia Yan gave Zhou Zheng a thumbs up, admiring from the bottom of his heart. This kind of autopsy logic sounded like a chain, and he understood it after listening. It seemed that it was not so easy to analyze, but When I look at it myself, I often get confused.

"I just talked about the impact injury, let's talk about the fall injury." Zhou Zheng obviously did not stop the momentum of the argument, and continued: "The fall injury refers to the injury caused by the human body being hit by a vehicle or thrown, and it is the same as the impact injury. Similarly, falls are very common in traffic accidents."

"Mmmmmmm..." Xia Yan nodded more frequently, he felt like he was in class, and Zhou Zheng was his teacher.

He is a criminal policeman who studied forensic science when he was in the police academy, and he is very clear about the investigation process of the case.

However, in criminal investigation, not every piece needs to be done by oneself. For example, in the autopsy section, it is written to submit it to the forensic doctor for autopsy as soon as possible, and then judge according to the conclusion.

As for the autopsy process...

That's a matter for forensic doctors, and has nothing to do with their criminal police.

"The injuries from the fall were mainly distributed on the head, chest, waist and abdomen, but, you see, the deceased did not have such injuries."

"Of course, the most extreme situation has to be mentioned here, that is, the deceased was hit on the forehead, and then was sent flying, and it happened that the forehead hit the ground again, and the whole person died."

"In this very ideal state, there can be no other injuries to the whole body. However, there is another indispensable injury form here, and that is the deceleration injury of the brain."

"When the brain is doing deceleration, there will be contusion injuries, along the direction of the force, and the contusion will occur on the part corresponding to the force point."

"In this case, the deceased had scars on his forehead, so if it was a blunt injury, there would be damage to the scalp, skull, and brain tissue in the corresponding occipital area, but there was no evidence of this on the corpse."

Having said that, Zhou Zheng paused slightly, staring at the corpse lying quietly on the corpse bed, as if he was asleep.

"There was neither impact injury nor fall injury on the corpse, so how could he have died in a traffic accident?"

"It's so fucking reasonable!" Xia Yan suddenly felt hearty, listening to Zhou Zheng's quick analysis, he only felt that it was wonderful.

"In addition to the impact injury and fall injury, there are also crush injuries, and the injuries caused by the wheels rolling over the body are also absent in this case."

Zhou Zheng was still analyzing.

"The skin of the index finger was greatly pulled when stretching the wound. When the pulling force exceeded the tensile limit of the skin, the skin would split along the skin lines and form a shallow tear wound. There was no such thing in this case."

"The last is the abrasion, which is the only one in this case."

"However, it is very strange."

Zhou Zheng pointed to the damaged skin at the elbow of the dead body, and said slowly: "The bruises on the deceased's body were mainly concentrated on the elbow joints and knees. If it was hit by a car, then how could he use such a strange posture to drag the body?" Wipe out the wound?"

"Murder case!" Xia Yan immediately clapped his hands and said, "This is a murder case. You have completely convinced me that an autopsy can be performed."

"Thank you." Zhou Zheng nodded immediately. What he was waiting for was Xia Yan's words. Everything he examined just now was just from the corpse table. Without a systematic dissection, no specific and effective conclusions could be drawn. .

The next moment, he picked up the scalpel and began to shave the dead man's head.

Dissection of a cadaver begins with the head, and dissection of the head begins with the shaving of the hair.

Zhou Zheng's hair-shaving technique is not as good as Cui Jun's. He takes a scalpel and slowly shaves along the root of the hair, trying to ensure that he can shave short hair without damaging the scalp as much as possible.

Xia Yan just watched Zhou Zheng's movements, and didn't dare to disturb him, but such a thought came into his mind.

In the future, Zhou Zheng can help cut his hair.

For their criminal policeman, there is not much hair style requirement, but he himself likes to be straight, so that he will look very energetic and capable.

Doesn't this just happen to be Zhou Zheng's haircut for the corpse?
Xia Yan silently kept it in his heart, knowing such a thing, if he happens to be fine in the future, he can ask Zhou Zhenglai to help him shave his head, and save some money.

Gradually, as time passed, half an hour passed, and Zhou Zheng shaved off all the hair of the deceased little by little.

"There is no apparent damage to the cranial brain."

After carefully examining the dead man's brain, the only thing he could be sure of was the rosiness on the forehead.

He picked up the scalpel and gently cut the skin, and found that the bleeding point was in the dermis.

The scalpel cut through the muscles and felt a crunch when it touched the forehead and skull.

"There is a fracture in the frontal skull."

Zhou Zheng turned his head to get the craniotomy saw, and after plugging in the phone, he pressed the switch, and the roar of the high-speed rotation of the chainsaw suddenly sounded.

After testing it, he turned off the craniotomy saw.

"Captain Xia, help me hold the head of the deceased." Zhou Zheng motioned for Xia Yan to hold it with both hands.

"What did you say?" Xia Yan frowned fiercely.

"Hold on and don't let your head turn." Zhou Zheng urged.

"No, wait, you let me hold it with your hands, don't you have any fixed instruments?" Xia Yan looked at the saw-toothed craniotomy saw, feeling palpitations, and said, "Are you good at operating this thing?" , don't cut off my hand!"

"I'm really worried when you say that." Zhou Zheng joked.

"No, no, it's not right, it can't be like this, I'm here to help, I'll be your assistant, when you use this kind of exaggerated tool, just pretend that I haven't been there before." Xia Yan retreated heartily, The roar of the sawtooth moving at high speed gave him a strong sense of fear, but compared to the craniotomy saw, he was more afraid of Zhou Zheng who was using the craniotomy saw.

"There is no way to determine the exact cause of death without a craniotomy," Zhou Zheng said seriously.

"If I'm not here, how do you deal with it?" Xia Yan retreated further and further away, and those who didn't know it thought that there was a chainsaw horror here.

"Then I'll wait for Master to come in the morning before opening the skull." Zhou Zheng said without thinking.

"I think this plan is very good!" Xia Yan gave Zhou Zheng a thumbs up.

"It's just a waste of time like this. It's not easy for you criminal police to do it before you issue a report." Zhou Zheng was a little embarrassed.

"It's not hard to do. I believe you. If you know that the deceased was killed, no matter what you do, you will just give me another cause of death. The main point is to make sure it is not a traffic accident. I will investigate directly according to the murder case." It's over, this result is not that important to me, and I don't want to know that much." After Xia Yan finished speaking, he added another sentence in his heart, "I don't even want to participate!"

"Okay, then I'll dissect the chest and abdomen." Zhou Zheng put down the craniotomy saw in desperation. After all, this thing is used a lot without help. If you are not careful, you may hurt yourself, and it is easy to damage it. corpse.

He picked up the scalpel again, ready to open the chest and abdominal cavity of the deceased.

"That... so... so..." Xia Yan looked at the scalpel shining brightly under the shadowless lamp, and he was not feeling well.

He was already busy during this time, but the case happened suddenly, and he didn't sleep well.

After I came here, I wanted to help Zhou Zheng, so I set foot in the "forbidden place" like the dissection room. After all, no one can enter here casually when Cui Jun is working.

The stench of corpses kept hitting his taste buds.

Now the skull was opened and disemboweled again, which made the desire to vomit that was constantly surging up in his heart rise and intensify.

"I have other things, so I won't accompany you here. It's important to investigate the case!"

Xia Yan hurriedly made up a reason, and left the dissecting room as if fleeing.

I still don't forget to sigh in my heart.

Forensic medicine is really not made by humans!
(End of this chapter)