Method for preparing skeleton model of deformed knee joint based on 3D printing technique

Abstract

The invention discloses a method for preparing a skeleton model of a deformed knee joint based on a 3D printing technique. The method mainly comprises the following steps of carrying out continuous tomography (CT) scanning on a patient to obtain image data; performing threshold distinction and binarization processing in medical software Mimics so as to obtain independent femur and tibial mask data, and constructing a three-dimensional model; conducting polygon processing and precise curved surface processing in reverse engineering software, and obtaining a NURBS curved surface model; using an FDM forming 3D printing technique to print a pathological skeleton model at a ratio of 1:1. According to the method for preparing the skeleton model of the deformed knee joint based on the 3D printing technique, a surgeon can be enabled to observe and understand the condition of the patient more intuitively so as to make an optimal scheme for an operation process, and the optimal operation scheme can be customized; the operation time is shortened, the operation risk is reduced, and the success rate of the operation is improved; pathological skeleton models of other parts of the body can be treated similarly, and therefore the method for preparing the skeleton model of the deformed knee joint based on the 3D printing technique is broad in development prospect and market potential.

Description

technical field [0001] The invention relates to the field of medical technology, and has distinctive characteristics of medical-industrial integration, specifically a method for making a bone model of a deformed knee joint based on 3D printing technology before knee joint surgery. Background technique [0002] Osteoarthritis (OA), also known as osteoarthrosis (osteoarthrosis), is a common rheumatic disease. Osteoarthritis affects walking, up and down stairs and other lower limb functions of elderly patients, and some seriously cause joint dysfunction, joint deformity, and even disability. Patients with severe osteoarthritis require knee surgery for treatment. [0003] Before traditional knee surgery, the surgeon will obtain the patient's image data through CT and MIR, and carry out preoperative design and planning on the two-dimensional image. However, the ability of two-dimensional images to restore the actual symptoms of patients is limited, and there are many uncertain ...

AI Technical Summary

Problems solved by technology

However, the ability of two-dimensional images to restore the actual symptoms of patients is limited, and there are many uncertain factors, which make the initial operation plan unsuitable or even impossible to complete the operation, so the operator must redesign the plan during the operation

This will not only increase the operation time, increase the operation risk, but also reduce the success rate of the operation, and will cause great damage to the patient's body.

[0004] Traditional bone models are all general-purpose teaching models, which are not suitable for complex and diverse surgical planning and rehearsal. Moreover, the traditional bone model production method is too complicated and time-consuming, and cannot provide reliable information for the surgeon as soon as possible. Personalized 3D physical model assisted surgery

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