Attending ex-girlfriend's wedding, arresting the groom's officer on the spot

Chapter 205 Teaching of Skeleton Identification
When a homicide occurs, the police at the place where the crime occurs will use all their police resources to solve the case.

What's more, seven corpses were watered inside the pier.

Li Donglin of the Criminal Investigation Division [-] of the Provincial Department personally sits in the town, and the QZ City Criminal Investigation Detachment, the major criminal police brigades under it, and the police station are all working on this case.

Any lead will be followed up in the shortest possible time.

Although Lu Chuan was in the rear, he could feel the tension on the front line.

Because in less than three hours, the identity information of No. [-] body was fed back to the rear.

"Designer?"

The owner of corpse No. [-] is Wang Xiaobo, an engineering designer.

However, unlike ordinary designers, Wang Xiaobo studies intelligent robots.

"Li Chu, they are already investigating. The company Wang Xiaobo worked for back then had relatively cutting-edge technology."

Zhang Yuanchao looked at the relevant information and chatted with Lu Chuan to explain.

According to the results of the current investigation, this seems to be an ordinary case of commercial espionage.

But the company Wang Xiaobo works for is just an ordinary civilian company.

According to the data, there are only some relatively high-end programming in the control of drones.

Speaking of secrets, there are also some, after all, they are commercial secrets.

But it seems that it has not reached this level.

Lu Chuan heard many similar cases when he was in college.

Most commercial espionage cases are bribed with money, and they are usually cases of the Economic Investigation Detachment.

There are not many murder cases involved.

Shaking his head, Lu Chuan continued to do his work.

There is a division of labor to solve the case, and Lu Chuan and the others' battlefield is in the rear.

Seven skeletons, so far, the identities of four people have been confirmed one after another.

Investigations surrounding their relationships are also advancing rapidly.

Lu Chuan continued to identify and analyze the bones.

Skeleton identification analysis is actually an important branch of identification analysis of human remains.

The identification and analysis of human remains does not mean that it must only be carried out on the dead.

Disability identification for living people is actually part of it.

"This time, I will mainly tell you about the gender identification of the skeleton."

Lu Chuan was operating, and Zhang Yuanchao was explaining.

Most of the students who followed Zhang Yuanchao this time were young forensic doctors with rich theoretical knowledge but relatively little field experience.

It is not uncommon for a case to come across seven skeletons.

Generally speaking, there are very few forensic doctors who can accumulate experience in bone identification.

Some people can meet together in a year, and some people may not even meet in three to five years.

There are two skeletons in Zhang Yuanchao's studio, but they were donated by the hospital.

The bones were almost patinaed by these forensic doctors, and the familiar ones were no longer familiar. Moreover, after touching for a long time, the bones, especially the surface conditions, changed a lot.

Where is it like now, this is the first scene of the crime.

There are 15 years of skeletons sealed in the concrete pier, and each skeleton is the best teaching tool.

If they can analyze these skeletons thoroughly, this group of students will almost be able to graduate.

In the future, after two or three cases of baptism, the level can be improved and consolidated.

Lu Chuan is now measuring the size of the pelvis of a skeleton.

"The shape of the pelvis is the most accurate and important basis for distinguishing the sex of the skeleton."

"The male pelvis is narrow and high, the female pelvis is wide and short..."

"Come and see the pelvis of this corpse, is it male or female?"

Several forensic doctors stepped forward and judged at a glance: "Male."

For this basic judgment, Zhang Yuanchao was not even interested in affirming it.

There is a big difference in the shape of the pelvis between men and women, let alone forensic medicine, even ordinary people, as long as they have normal eyesight, they can tell the difference.

The point is, not all skeleton cases will get complete skeletons.

Moreover, the difference in the pelvis is not strictly narrow or wide.

How to determine gender if only a small part of the pelvis is available?

"In most skeleton cases, the proportion of mutilated corpses is higher, so if it is not a complete skeleton, it must be judged by other methods."

Zhang Yuanchao began to give an example: "For example, the bone density of the pelvis of men is higher, while that of women is lower."

Bone density is relatively easy to measure, and the general criminal investigation detachment has instruments for measuring bone density.

Of course, most of the time there aren't that many skeletons to test.

This instrument is not idle. Usually, many criminal police will ask forensic doctors to measure their bone density for free.

That way you don't have to test it during the physical examination.

The money saved can be used for other projects.

Recently, the provincial department has implemented a packaged medical examination for the police in the whole province. According to different ages, the cost of each physical examination is different.

You can choose and match freely according to the items in the physical examination menu according to your physical condition.

Except for some necessary height, weight, eyesight, etc., others are supermarket choices.

If you have one less bone density, you can choose one more.

"The obturator of the male pelvis is oval, and the female is triangular."

"Varus of the ischial tuberosity in males, valgus in females."

"The male sacrum is narrow and long, and the female is short and wide..."

Every time Zhang Yuanchao introduces a part, Lu Chuan will point out the location of the different points for everyone to watch.

"Oh, this corpse is a woman..."

"Mr. Zhang, if the pelvis is not found, other bones can also be used to determine gender?"

Zhang Yuanchao nodded, of course this can also be judged.

"When you were in school, you should have learned that the most reliable way to judge the gender of a skeleton is based on the shape of the pelvis."

This is determined by the different physiological structures of men and women.

The shape of the female pelvis is the most favorable for fertility.

The male pelvic shape is conducive to the transmission of power.

"Another part to judge the sex of the skeleton is the skull. Generally speaking, the male skull is thicker, the surface is rougher, and the bone density is higher."

"But there are some special women. Girls have a male face. They say that although they are women, their appearance is biased toward men."

"There are also some special men, male and female, with feminine looks, small bones, and a preference for women."

Zhang Yuanchao walked up to Lu Chuan and picked up the skull of No. [-] skeleton.

"However, the mandibular angle of the skull is regular. If it is less than 125 degrees, it is a man."

"In addition to this, judging gender also needs to be combined with broken bones, vertebrae, sternum, etc. to make a comprehensive judgment."

During the teaching process, Zhang Yuanchao asked Lu Chuan to mess up the bones, and then asked the students to comprehensively judge the gender of the owner of the bones based on the only few bones.

Lu Chuan often feels that when solving a case, time always passes quickly.

The forensic laboratory and the identification and analysis reports of the seven skeletons have all been issued.

Zhang Yuanchao's teaching activities to the young forensic doctors who came with him also temporarily came to an end.

The frontline case investigation has also made great progress.

(End of this chapter)