As for rhinoplasty materials, the most commonly heard are autogenous cartilage, expanded body and silica gel prosthesis. As for the "allogeneic bone" material, there are still many people who have some misunderstanding and incorrect cognition about allogeneic bone augmentation nose. Today, I will give you a detailed introduction of what is allogeneic bone?
01
What is allogeneic bone?
As the name implies, it is the bone material made of allogeneic (human or animal) bone. Allogeneic bone mainly includes allogeneic costal cartilage and allogeneic decalcified bone. These two materials are different, and the scope of use is also different: · allogeneic costal cartilage is mainly made by removing the antigen (degreasing, drying, irradiation sterilization) from the donor's costal cartilage. ·Allogeneic decalcified bone is made of donor's bone and animal's bone by removing mineral (mainly hydroxy calcium phosphate) and antigen and synthesizing with collagen. Among them, in the field of plastic surgery, allogeneic costal cartilage is mainly used, which can be used for ear reconstruction and rhinoplasty.
02
Is allogeneic bone ideal?
In rhinoplasty, transplantation material is one of the key factors to determine the effect of surgery. For many years, autogenous tissue and allogeneic graft have formed two camps, each with advantages and disadvantages. Autogenous tissue has no rejection, strong anti infection ability and low absorption rate. However, in China, there are limited materials for septal cartilage, weak ear cartilage support, and slight scars left by costal cartilage.
At present, the use of allogeneic bone is relatively small. At this stage, most plastic surgeons do not recommend the use of it unless it is necessary. For example, costal cartilage is calcified until it cannot be used. Otherwise, it is more recommended to use its own cartilage. There is nothing better than its own.
The preparation of autogenous costal cartilage scaffold in rhinoplasty
In this case of cleft lip and nose deformity, the patients who choose to use allogeneic bone from costal cartilage are mostly those who don't want the pain or scar caused by cartilage removal. If you want to use allogeneic bone, let's first see if you can accept the following:
1. Allogeneic bone is an organic biomaterial obtained from human body after processing; 2. Allogeneic bone has not been widely used, it can only be used after antigen removal, but it cannot be ensured whether it can be removed completely, which will cause some other problems, so the risk is still there; 3. Clinically, there is a certain absorption rate of allogeneic cartilage, the absorption rate is not stable, there is also a The probability of rejection is higher for rhinoplasty.
Reminder
There is no perfect material for rhinoplasty. The use of autogenous cartilage for rhinoplasty may cause cartilage bending, leaving scars in the donor area and less cartilage. The absorption rate, cartilage deformation, nose infection and other problems of allogeneic cartilage need further clinical observation and improvement. However, due to the various advantages of its materials, with the popularization of rhinoplasty in the future, it is bound to have a more comprehensive understanding of it. See this, if you decide to use allogeneic cartilage for rhinoplasty, you must go to a regular hospital to carry out this operation.
1. The latest notice of burn plastic and aesthetic surgery clinic of Xiangya Second Hospital
2.3.8 women's Day value-added activities, waiting for you to become beautiful
3. How to register online? Here's how to teach you