3D printing technique-based preoperative knee joint deformed bone model production method

Abstract

The invention relates to a 3D printing technique-based preoperative knee joint deformed bone model production method. According to the method, based on alignment standards of the human body, knee joint digital imaging data are acquired; the digital imaging data are processed and then are inputted into computer aided design software for performing bone stratification and positioning; 1:1 operation design is performed on a digital 3D model and the bones of the human body; deformed bone removal is carried out through using the CAD according to a knee joint deformity state; a formed upper cut bone and lower cut bone are matched with each other along a longitudinal direction so as to be combined together; the imaging data of three generated cut bones are inputted into Materialise 3D modeling software for simulating the bones of the human body; three cut bone models are printed out through 3D printing; the three cut bone models are matched and combined with one another, so that a preoperative knee joint deformed bone model can be formed; and based on the bone model, bone cutting simulation operation is carried out in vitro, pre-shaping of a prosthesis to be implanted into a patient can be realized, personalized surgeries, customized prosthesis design and production can be realized authentically.

Description

technical field [0001] The invention belongs to the field of medical technology, and in particular relates to a method for making a bone model of preoperative knee joint deformity based on 3D printing technology. Background technique [0002] Knee joint deformity caused by osteoarthritis and rheumatoid is a relatively common chronic joint disease among middle-aged and elderly people. So far, total knee replacement surgery has become a relatively effective treatment. [0003] For complex orthopedic surgery, medical science now analyzes and discusses more on CT or MRI data, which lacks intuition and operability; and due to the singleness and non-reproducibility of human knee bones, modern medicine is performing total knee replacement. During the operation, a lot of time is spent on the plasticity of titanium plates, absorbable plates and other prostheses or treatment plates, which increases the operation time of patients and increases the chance of complications; and the prepa...

AI Technical Summary

Problems solved by technology

[0003] For complex orthopedic surgery, medical science now analyzes and discusses more on CT or MRI data, which lacks intuition and operability; and due to the singleness and non-reproducibility of human knee bones, modern medicine is performing total knee replacement. During the operation, a lot of time is spent on the plasticity of titanium plates, absorbable plates and other prostheses or treatment plates, which increases the operation time of patients and increases the chance of complications; and the preparation of surgical bone models can be directly converted from two-dimensional images It is a three-dimensional entity with better visibility and can directly simulate the treatment and discuss the operation plan, so as to realize the plasticity of the prosthesis or treatment plate to be implanted in advance, shorten the operation time, reduce the bleeding of patients, and reduce the chance of complications, so It is of great significance to the research on the preparation technology of surgical bone model

[0004] The bone models used in the prior art are general-purpose products of standardized production. Most of them are manufactured by traditional production methods of numerical control finishing. Due to the reasons of production equipment, not only the production cycle is long and the cost is high, but also it is difficult to achieve personalized surgery and customized prosthetics. The highest therapeutic concept in body design and production