Large bone defect assist bone graft magnesium alloy stent and production method thereof

Abstract

The invention discloses a massive bone defect assist bone graft magnesium alloy stent and a production method thereof. The production method includes the steps of (1) performing three-dimensional reconstruction according to the CT and MRT imaging technology to simulate the size and the shape of a large bone defect portion; (2) printing a biomedical orthopedic material through the 3D printing technology to produce the assist bone graft magnesium alloy stent; (3) treating the outside and edges of the assist bone graft magnesium alloy stent to enable the assist bone graft magnesium alloy stent to adapt to the large bone defect portion; (4) filling the assist bone graft magnesium alloy stent with appropriate amount of artificial bone cement to complete the overall assist bone graft magnesium alloy stent. The massive bone defect assist bone graft magnesium alloy stent and the production method of the massive bone defect assist bone graft magnesium alloy stent are based on CT and MRT data of a patient to maximally repair the defect portion of the patient, effectively improve the matching degree of the bone stent with the patient and use the 3D printing technology for achieving personalized customization, shortening the production time of the bone stent and reducing costs.

Description

technical field [0001] The invention relates to the research field of medical auxiliary bone grafting brackets, in particular to an auxiliary bone grafting magnesium alloy bracket for large segmental bone defects and a preparation method thereof. Background technique [0002] Bone defects of large segments of long bones are common in the lower extremities, especially in the lower legs. They are basically caused by severe bone trauma, bone loss, sequestrum removal due to bone infection, and resection of bone tumors. With the development of modern medical technology, many patients require large segmental bone defect repair. Therefore, there is a broad application market for the application of the research results. [0003] Currently, the repair techniques for large segmental bone defects include Ilizarov technique, fibula transplantation, and allogeneic bone transplantation. The Ilizarov technique has the advantages of fast bone healing, accurate bone reduction, and stable a...

AI Technical Summary

Problems solved by technology

The Ilizarov technique has the advantages of fast bone healing, accurate bone reduction, and stable external fixation, but it has unavoidable complications, such as loosening and breaking of fixing screws, screw tract infection, neurovascular injury, etc.

Fibula transplantation can achieve immediate reconstruction of blood circulation, rich blood supply, and rapid healing, but the hypertrophy of the grafted bone is obvious, accompanied by many complications, such as circulatory disturbance, fracture of the grafted bone, delayed union or nonunion, nerve paralysis, etc.

Allogeneic bone transplantation is one of the most commonly used treatment methods. The traditional graft material is autologous bone, which has the characteristics of strong bone formation and easy healing. However, it is limited due to limited sources, secondary injuries, and increased chances of infection. Clinical application

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