The main component of bone cement is polymethyl methacrylate, which has been used in clinic since the early 196s. In the process of use, in order to facilitate transportation and storage, the bone cement is designed as white powder and liquid with colorless irritating smell. When in use, it can start polymerization at room temperature by mixing them. Generally, it begins to be sandy, gradually transitions to be porridge-like, and finally it is dough-like. In the dough stage, the bone cement can be kneaded and extruded at will to make it form any shape, and it takes about ten minutes to polymerize to complete the hardening process.
Bone cement can be used to fill and repair some bone defects and fill the bone defects. Also known as skull repair surgery.
Bone cement is used as a medical skull repair material.
It has the following advantages:
1. It has strong plasticity, can accurately restore the skull of the missing part of the patient, and improve the safety factor of the repaired part after operation.
2. The patient feels comfortable after being implanted in the human body, and there is no hot feeling or cold feeling.
3. The strength and hardness are similar to those of bone tissue.
4. The weight is light, so that the patient has no foreign body sensation.
5. It can be disinfected at high temperature and high pressure.
6, suitable for postoperative radiation transmission.
However, this material is rarely used as a repair material in clinic. Instead, it is a polyether ether ketone material with superior performance. Also known as peek skull repair material. Compared with bone cement, it has superior performance and better compatibility with human tissues, and is the best choice for skull repair materials. Moreover, skull repair operation is a kind of operation without entering brain tissue, and the operation is performed outside the cerebral cortex, especially outside the dura mater, or outside the scar after the first operation, or outside the fascia. Therefore, skull repair surgery is generally safe, and the surgical technology is relatively mature. Choosing experienced doctors has a high success rate, so patients need not worry too much.