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 supporting 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 the stability depends on the cone spikes at the head and tail ends. The surgeon can only add titanium plates or nail rods 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 looks like the one that Xie Wanying holds now. The structure is actually not complicated. One inner cylinder and one outer cylinder are composed of a cone, and the adjustment screw is added. The surgeon wants to adjust the height during the operation.

, pull up the inner cylinder and fix it. If you want to lower it, press the inner cylinder and fix it again. Adjust it can be adjusted, but the inner cylinder and the outer cylinder is fixed only by screws. You can think about it and know that the stability is not reliable. Therefore, the operation

The doctor 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 depends on its own front and back ends.

Directly add screws to fix them 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 talk about the need to remove the vertebrae when removing the vertebrae during surgery. The cartilage tissue between the vertebrae, i.e., the intervertebrae disc, must be removed at the same time. Only in this way can the artificial vertebrae be fixed between the two front and back vertebrae.

After removal, it can be imagined that it will affect the activity and physiological function of this part of the spine. Therefore, the fusion artificial vertebrae is fixed and cannot be bent and cannot replace the intervertebral disc. In this case, the spine's activity pressure can only be transmitted to the vicinity.

If the patient is an elderly person, the disc atrophy of the disc is not very good, it will eventually lead to degeneration 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, a movable artificial vertebrae was invented. The purpose of movable is to compare with the artificial vertebrae that replaces the function of the intervertebrae. This vertebrae has some intervertebrae functions that can be forward-flexed and rotated on the dorsal sideways.

These movable artificial vertebrae are not mature and are still in the exploration stage. The ideal is beautiful, and it is very suitable for the Creator to be exactly the same as the original organs and tissues of the human body. This upgraded and transformed latest products must be more old than the old ones.

The model is expensive. In order to save money, the most common clinical practice is the fixed artificial vertebral body and nail rod system. The doctor's technical efforts are used to make up for the shortcomings of the fixed type.
Chapter completed!