Personalized preparation method of human rumpbone prosthesis

Abstract

The invention discloses a personalized preparation method of human rumpbone prosthesis in the technical field of rumpbone prostheses. The problem that the size of rumpbone prosthesis does not match the actual demand is solved. The technical points are as follows: the preparation method includes the following steps: extraction of rumpbone morphology data; virtual osteotomy; extraction of a prosthesis outer-contour model; establishment of an outer support frame morphology model; establishment of a bone ingrowth layer morphology model; establishment of a central weightless body morphology model;formation of a personalized rumpbone prosthesis CAD model by fusing various parts; 3D printing; and post-processing. The problem that the rumpbone prosthesis cannot match rumpbone of a patient due todifferent physical features of patients and the problem that the size of the rumpbone that needs to be removed does not match the size of a rumpbone prosthesis finished product in different surgical schemes are solved. The effect of making the size and shape of a rumpbone prosthesis made by the above method accurately match the actual demand is realized, and the rumpbone prosthesis has good compatibility with a human body while accurate size and bone ingrowth fusion effect are achieved.

Description

technical field [0001] The invention relates to the technical field of sacral prosthesis, in particular to a personalized preparation method of human sacral prosthesis. Background technique [0002] The sacrum is an important bone in the pelvis, which plays an important role in supporting the spine, maintaining the structure of the pelvis, and transmitting body loads. When patients with sacrum tumors go to the doctor, the tumors are often large, and in the process of sacral tumor resection, part of the tumor connected to the sacrum needs to be resected together. After a part of the sacrum is removed, it is easy to have a greater impact on the postoperative activities of the person, making it inconvenient for people to move, and it will also affect the ultimate load that the sacrum can bear. Therefore, it is necessary to use a sacral prosthesis to replace the removed bone. . [0003] In actual use, the required sacral prosthesis is often different in size and local shape, a...

AI Technical Summary

Problems solved by technology

After a part of the sacrum is resected, it is easy to have a great impact on the postoperative activities of the person, making it inconvenient for people to move, and it will also affect the ultimate load that the sacrum can bear. Therefore, it is necessary to use a sacral prosthesis to replace the resected bone.

[0003] In actual use, the required sacral prosthesis is often different in size and local shape, and the sacral prosthesis produced by traditional batch processing technology is likely to be different from the shape and size of the sacral prosthesis required by different patients. Big difference, which causes inconvenience in use

Therefore, there is a problem that the size does not match the actual demand in the prior art

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