Acetabular bone defect reconstruction method based on 3D printing

Abstract

The invention discloses a 3D printing-based acetabular bone defect reconstruction method. The method comprises the following steps: S1, preparing and representing a titanium metal implant subjected to electron beam melting 3D printing, and detecting cell compatibility; s2, in-vitro characterization of biological characteristics of the titanium metal implant subjected to electron beam melting 3D printing; s3, in-vivo characterization of biological characteristics of the titanium metal implant subjected to electron beam melting 3D printing; and S4, clinical research of the titanium metal implant subjected to electron beam melting 3D printing. According to the scheme, based on CT three-dimensional reconstruction of the acetabular bone defect form, a digital cushion block filler model is established by means of computer-aided design (CAD), and a personalized metal cushion block implant with good biological characteristics is manufactured by means of an electron beam melting (EMB) 3D printing technology, so that effective reconstruction of the acetabular bone defect is achieved, and the acetabular bone defect is effectively reconstructed. Therefore, a new solution is provided for the bone defect problem in the hip joint revision.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a method for reconstruction of acetabular bone defect based on 3D printing. Background technique [0002] The hip bone is composed of three parts: the ilium, the ischium, and the pubic bone. There is a large and deep socket called the acetabulum on the outer surface, which forms the hip joint with the head of the femur. The acetabulum is an important part of the hip joint. Because the hip joint is heavily loaded and has a large range of motion, it is prone to injury. [0003] With the acceleration of my country's population aging process and the continuous improvement of the quality of life of Chinese people, the number of patients undergoing joint replacement due to hip joint diseases is increasing year by year and showing a younger trend; according to incomplete statistics, the number of patients receiving hip joint replacement in my country every year is as high a...

AI Technical Summary

Problems solved by technology

[0006] Electron Beam Melting (Electron Beam Melting, EBM) is an emerging rapid prototyping manufacturing technology in recent years. Its principle is to import three-dimensional model data into EBM printing equipment, use metal powder as raw material in a vacuum environment, and induce deflection through a high-energy electron beam through a magnetic field. The high energy generated after focusing melts the metal particles, and then forms a thin metal layer through solidification and fusion, and completes the construction of the metal entity by layer-by-layer laying; at present, there are some domestic 3D printed titanium alloy implants using EBM technology (see figure 1 ) is used clinically, and its short-term curative effect is satisfactory, but it is difficult to achieve effective reconstruction of acetabular bone defects with this method

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