novice forensic medicine

Chapter 111 The 'Soap Bubbles' on the Bones [Second More]

Xu Dayuan smiled.

Zhou Ning's question was straight to the point. This kind of comfortable feeling of cooperation cannot be given by others.

Especially in the morning meeting, each one of them was hesitant to express their opinions for a long time, and they were not at all straightforward. After finally getting these fragmented information, it was difficult to think whether they were happy or not after seeing Zhou Ning's reaction.

"You guessed it right, the Xiaolongshan Han Dynasty tombs in Xinghua City started excavation work three years ago, but the heavy rain began at the end of May last year, and the excavation work was in a mountain depression. The low terrain had to be suspended, and the experts were evacuated. , A warning belt was set up around.

Because of the danger of landslides, the archaeological team was only guarded at the periphery, and the archaeological team received a temporary mission at the end of August to go to Quanshan District for support. More than a dozen robbery caves were found there, so they could only conduct rescue excavations.

After the Spring Festival, that is, on February 2, the experts returned to the Xiaolongshan archaeological site in Xinghua City. During the aerial photography, they discovered that there were a large number of scattered bone fragments, and one piece had two bloodstains on it. They called the police, but they did not expect The reporter was there at the time.

We have only so much information. The Forensic Office of the Municipal Bureau is weak in bone identification. Experts from the provincial department came here once and gave some opinions on bone identification. However, Cui Haibin has not made any progress. The investigation of the case is deadlocked, and the identity of the deceased is still unclear. I want to hear your opinion. "

Zhou Ning knew that Xu Dayuan's intentions were obvious, and hoped that he could use Dr. Lu's resources to re-investigate the case.

Looking at the end, there are all parts of the skeleton in the picture, but Zhou Ning is also a little uncomfortable because there is no skull. After all, the software is for the restoration of the skull. What should he do without the skull?
"Xu Da, I understand what you mean. I want to use that software to try, but there is no skull, which makes the software helpless. Why don't we focus on finding the skull?"

Xu Dayuan nodded and sighed again.

"I thought so too. I asked about the skull search. Several waves of people went to the scene. It was almost a carpet search. However, according to the fan-shaped area, the skull was not found."

Big Zhao came over, he was still in a daze.

"Let me interject, what's going on with Zhongtian News? Isn't it just that the reporter went to talk nonsense, does it have a big impact?"

"The news was released by foreign media on April 28, and it wasn't published on the same day, so we didn't hear the news, but such a scribble, with mixed truth and falsehood, directly ordered the provincial government to solve the case within a deadline of one month. Time is tight The task is heavy, and only by cracking the case can we resist the rumors."

Da Zhao suddenly realized, but these are really out of control.

Zhou Ning stared at the distribution map where the bones were found, and looked at it again. He found nothing, but felt that it was on the mountainside. It looked like the edge of a small road, and the valley below. How could such a location be so far away? Far.

After thinking about it, he looked up at Xu Dayuan, who was looking at him hopefully, Zhou Ning couldn't say the words of rejection at this moment.

"Why don't we take a look at the bones upstairs first?"

Xu Dayuan waved his hand.

"Go!"

Several people stood up, Da Zhao patted Xiao Sun on the shoulder.

"Dude, do you keep the key to the forensic teaching and research room upstairs?"

Xiao Sun nodded, and took out a bunch of keys from the drawer.

"Director Cui kept it. No one took over after he left, so it was placed in the office of the second group."

Da Zhao found the key and looked at Zhou Ning.

"Should I explain to Director Pang?"

Xu Dayuan waved his hand, signaling Zhou Ning not to call.

"When I was going upstairs, I ran into Director Pang. He was in a hurry to go to the Municipal Bureau for a meeting. I said I would go to see the bones of the 2.21 case. He said that I can just go to you and don't ask any more questions. I think the forensic office People, they can't avoid this 2.21 case."

Zhou Ning sighed. He was not surprised by this result. If he was a member of four groups and five groups, and someone came to take over the case left by Director Cui, he would not take the initiative to help. After all, this is a hot potato. Make a fuss.

The four of them went directly to the forensic teaching and research room on the westernmost side of the third floor, opened the door and all the lights, Xiao Sun ran over directly, turned on a computer, and many X-ray photos appeared on the projector, obviously all of these skeletons .

Zhou Ning's gaze was directly attracted by the huge table. On a table the size of a double bed, there were two piles of skeletons, one pile was scattered, and the other pair seemed to want to join together to form a human body, but it was awkward no matter how you looked at it. , and next to it were two pieces of paper with the age of the skeleton marked on it.

"Find a box and pack the 2.21 bones that don't belong to the 159 case."

Xiao Sun found a sorting box, and Da Zhao packed the small pile of bones together with him, and put the piece of paper in it thoughtfully.

A beep sounded in Zhou Ning's ear.

Drop, the binding person can choose the task level.

Zhou Ning didn't even think about it, and directly clicked on the intermediate task, and the system directly released the intermediate task:

1. To find out the identity of the deceased, the time limit is 48 hours;

2. To find the cause of death of the deceased, the time limit is 48 hours;

3. If there is a murderer, find the murderer and all the evidence to prove the cause of death within 7 days.

Seeing this content, Zhou Ning made a mistake. The system is the system, and it is always harsh. It is just a pile of bones. Let him find out the identity of the deceased and the cause of death within 48 hours. Isn't this terrible?
But what does it mean if there is a murderer?
Is this optional?

Besides, the time limit given by the Municipal Bureau was one month, and his system was even more ruthless, directly seven days. Now that the countdown had begun, he was not qualified to bargain. After all, he got enough and the rewards were generous, so there was nothing to complain about.

Zhou Ning didn't raise his head. After observing for more than ten minutes and comparing the X-ray images constantly, Zhou Ning started to move.

After systematic training every night, he has formed muscle memory for the splicing of bones and the shape of each position, which is similar to a jigsaw puzzle. Zhou Ning quickly rearranged these bones.

Seeing his movements, Xu Dayuan also moved closer, not to mention such a rearrangement, it doesn't look so weird anymore.

Zhou Ning didn't stop moving. During the process of arranging just now, some traces have been found, and he grabbed a piece of blood-stained bone. This is a piece of distal femur [1], which is a section of bone above the knee, and the cartilage layer on the articular surface is basically peeled off.

Da Zhao is very considerate, and has already sent his LED magnifying glass to his eyes. Xu Dayuan looked at this thing and it seemed familiar.

"Isn't this the one Zhou Xiaozhou bought and reimbursed before?"

Da Zhao waved his hand and quickly explained:

"We're going to come here, of course we prepared in advance, and Zhou Xiaozhou is comfortable with the household items he brought."

Zhou Ning did not participate in their conversation. He put the distal end of the femur under a magnifying glass. On the fracture surface, he could clearly see the traces of repeated cutting. It was cut by a chainsaw.

Next to the cutting surface, there are four or five cut marks of different shades, with blood stains inside the cut marks, Zhou Ning frowned slightly, this looks like a tentative cut mark, because he is not familiar with the operation of the saw, or the murderer is not strong enough, Can't hold down the chainsaw and can't complete the cut in one go.

Putting down the skeleton in his hand, Zhou Ning grabbed a piece of lumbar spine. There were almost no saw cuts on this piece of lumbar spine. Although it looked complete, it was osteoporosis.

Slightly raised his head and looked at Da Zhao.

"Don't talk nonsense, for the record, the deceased was male, aged between 70-80 years old, 170-175 cm tall, 65-75 kg in weight, and had limited mobility in his lower limbs.

The murderer was not strong enough, so he dismembered the dead body into small pieces and threw it away. The dismemberment tool was a hand-held chainsaw. "

This analysis has made Xu Dayuan's eyes shine. Many people have participated in the investigation of this case. The amount of effective information is small, and the bones are severely damaged. The existing information is only a pile of broken bones. I did not expect to find so many problems from the bones. .

"Can weight be estimated?"

Zhou Ning nodded. This cannot be explained in detail. After all, he found the estimation method in the literature provided by the system. There are many research contents of island countries in it, and of course it is not public content.

"Yes, but it's not very accurate. If there is a skull, this estimate is very accurate. From the analysis of the existing bones, the murderer's strength is insufficient. When the bone saw cut the body parts, many jumping jagged marks were formed.

Look here!The formation of these marks was due to the unskilled and insufficient strength of the murderer, and another reason was that the deceased was not fat, but he was not skinny, otherwise the marks would be deeper. "

Da Zhao wanted to speak, but Xu Dayuan pushed him away.

"Don't interrupt, forensic doctor Zhou will tell you about your findings. I can't keep up with my train of thought, so I figured it out? What about the age and inability to move the lower limbs? There are also marks on the bones?"

Facing Xu Dayuan's question, Zhou Ning nodded, pointing around the pelvis.

"The pelvis was basically pieced together before, with a catchy heart and a small front-to-back distance. This is the characteristic of a male pelvis. This DNA test can also be matched, so I won't go into details.

You can see on the X-ray film that the vertebrae have severe osteoporosis, which can be regarded as degenerative changes, which further confirms the age of the deceased.

On the distal femur, the remaining cortex can be seen, and the surface is also eroded. Da Zhao zoomed in on this location on the X-ray. Look, Xu Da, has there been a 'soap bubble' change in the distal femur? "

"What soap bubbles?"

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　[1] Distal femur: The distal femur refers to the distal end of the femoral head, that is, above the knee joint, mainly composed of the femoral condyle and femoral metaphysis.The distal femur is an important part of the knee joint, surrounded by muscles and ligaments, and forms the knee joint with the patella and the upper end of the tibia.

　　
　
(End of this chapter)