Things that can replace human bones must be as hard as bones, so metal materials are more common in orthopedics.

If these things were not shown in the surgeon's box, at first glance, they would think they were some kind of machine parts...

The cylindrical shape seems to be a screen to close. This thing is called a titanium cage, a type of orthopedic material.

Just looking at this structure, you know that it should be a simple device. It is indeed the case. It is the least complex support material in the fixed fusion artificial vertebrae. Since it does not have a device to adjust the height, it cannot be adjusted during surgery, and its stability depends on the conical spikes at the two ends of the head and tail. The surgeon can only add titanium plates or nail rods to it to help fix it.

Medical materials are constantly developing. In response to the defect that the titanium cage cannot be adjusted, another artificial vertebra that can be adjusted and fixed artificial vertebra will definitely be invented.

This artificial vertebral body is like the one held by Xie Wanying now. The structure is actually not complicated. One inner cylinder and one outer cylinder are composed of a cone, and an adjustment screw is added. The surgeon wants to adjust it during the operation, and then the inner cylinder is lifted and fixed. If you want to adjust it, press the inner cylinder and then fix it. It is possible to adjust it, but the inner cylinder and the outer cylinder are fixed only by screws. It is obvious that the stability is not reliable. Therefore, the surgeon must also add a nail rod system to it to assist in fixing.

How to strengthen the self-stability of artificial vertebrae, medical scientists have invented the following: self-fixed artificial vertebrae. This artificial vertebrae does not require a titanium plate or nail rod system, but it relies on its own front and back end to fix it on the adjacent vertebrae.

All three of the above are fusion artificial vertebrae. They develop step by step and try to overcome previous defects, but in the end there will inevitably be relative surgical sequelae due to loss of mobility.

Here we should talk about the need to remove the cartilage tissue between the vertebrae, i.e., the intervertebral disc, when the vertebrae is removed during surgical surgery. Only in this way can the artificial vertebrae be fixed between the two vertebrae. After the intervertebrae is removed, it can be imagined that it will affect the activity and physiological functions of this part of the spine. Therefore, the fusion artificial vertebrae is fixed and cannot be bent and cannot replace the intervertebrae. In this case, the spine movement pressure can only be transmitted to the adjacent vertebrae. Poor adjustment may eventually lead to degeneration of the disc of the adjacent vertebrae. If the patient is an elderly person, the disc atrophy is not good, the situation will be more serious.

After understanding this defect, the movable artificial vertebrae was invented. The purpose of movable is to compare the artificial vertebrae that replaces the function of the intervertebrae. This vertebrae has some disc functions that can be flexed forward and flexed on the back. However, these movable artificial vertebrae are not mature and are still in the exploration stage. Ideals are beautiful, and it is very suitable for the original organs and tissues of the human body, which is very suitable for the creator. The latest upgraded and modified products must be more expensive than the old ones. In order to save money, the most common clinically is the fixed artificial vertebrae plus nail rod system. The doctor's technical efforts are used to make up for the shortcomings of the fixed type.
Chapter completed!