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Construction method of individualized 3D printing acetabular wall defect repairing and reconstructing system

A 3D printing and construction method technology, applied in 3D printing, acetabular recess, prosthesis, etc., can solve the problem of lack of individual 3D printing acetabular wall defect repair and reconstruction system construction methods

Pending Publication Date: 2021-01-22
中国人民解放军联勤保障部队第九二〇医院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] To sum up, the existing technology lacks the construction method of individualized 3D printing acetabular wall defect repair and reconstruction system

Method used

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  • Construction method of individualized 3D printing acetabular wall defect repairing and reconstructing system

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Experimental program
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Effect test

Embodiment 1

[0043] Such as figure 1 shown

[0044] A method for constructing an individualized 3D printed acetabular wall defect repair and reconstruction system, comprising the following steps:

[0045] Step 1: Acquisition and processing of image data of acetabular wall defect

[0046] Based on CT tomography, the raw data of two-dimensional images of the healthy side and the lesion side (the acetabular wall defect side) were obtained, and the original data in Dicom format were imported into Mimics software for three-dimensional reconstruction to obtain a three-dimensional reconstruction model;

[0047] The three-dimensional model reconstruction is based on imaging software, and the three-dimensional model of the acetabulum is reconstructed by using functions of threshold segmentation (Thresholding) and region growing (Region growing).

[0048] Step 2: Anatomical analysis of the 3D reconstruction model and adaptive trimming of the lesion side

[0049] On the basis of the reconstructed ...

Embodiment 2

[0065] Application of a construction method of individualized 3D printing acetabular wall defect repair and reconstruction system in the preoperative planning of hip replacement for acetabular wall defect reconstruction;

[0066] A 64-slice spiral CT (GE Company, USA) was used for thin-slice scanning of bilateral hip joints of patients with acetabular wall defects, and the original CT image data was imported into Mimics 20.0 software (Materialise Company, Belgium) in Dicom format. The functions of segmentation (Thresholding) and region growing (Region growing) respectively reconstruct the 3D model of the bilateral hip joints, and based on the mirror function (Mirror) the mirror operation is performed on the healthy hip joints with the mid-sagittal position as a reference, and the hip joints on the affected side are identified. The position, shape and geometric size of the acetabular defect, through the measurement and analysis of the geometric size and topographic map of the de...

Embodiment 3

[0072] Clinical application of a construction method of individualized 3D printing acetabular wall defect repair and reconstruction system in hip dysplasia and total hip replacement.

[0073] Based on 3D printing technology, the size and shape of the acetabular defect was produced, combined with traditional THA operations, the repair and reconstruction system was implanted in the defect area, and mechanically fixed to repair the acetabular defect and correct the shape of the affected acetabulum, making the diseased acetabulum Restoring the complete geometric structure, and then implanting the acetabular cup prosthesis in a unified operation method according to the traditional method, the complicated operation is simplified, and the follow-up operation of THA is completed.

[0074] The size, shape and contour curve of the manufactured acetabular defect repair and reconstruction system conform to the size of the patient's 3D printed acetabular defect bone block, and the curvature...

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Abstract

The invention discloses a construction method of an individualized 3D printing acetabular wall defect repairing and reconstructing system. The construction method of the individualized 3D printing acetabular wall defect repairing and reconstructing system comprises the following steps: acquiring and processing acetabular wall defect image data; performing anatomical analysis on a three-dimensionalreconstruction model and performing adaptive trimming on a lesion side defect acetabulum; reconstructing a lesion side acetabulum model based on uninjured side acetabulum mirror image anatomical features; performing reverse engineering to obtain a three-dimensional model of a lesion side acetabular wall defect repairing and reconstructing system; and acquiring and printing an acetabular wall defect repairing and reconstructing three-dimensional model. For cases with hip joint dysplasia or cases requiring revision and acetabular wall defects, individualized prosthesis customization can be implemented, an artificial acetabulum capable of meeting the joint function of a patient is reconstructed, the application range of THA is expanded, the success rate is increased, the postoperative satisfaction rate is increased, postoperative complications are reduced, and besides, the operation in an acetabular wall defect repairing and reconstructing surgery can be simplified and normalized.

Description

technical field [0001] The invention relates to the technical field of acetabular wall defect reconstruction, in particular to a construction method of an individualized 3D printing acetabular wall defect repair and reconstruction system. Background technique [0002] Since Charnley published the Total Hip Arthroplasty (THA) paper in 1963, it has been widely believed to be a safe and effective method for treating hip joint disorders. THA is reimplanted with a new fixed prosthesis, which can restore the anatomical shape of the hip joint, eliminate joint pain, and improve the function of the hip joint. However, the common complex problem encountered in THA surgery is the bone defect around the hip joint. Whether it is primary or revision surgery, the reconstruction effect of the defective part of the acetabular structure during the operation is directly related to the success of the operation. The bone reserve of the acetabulum determines whether bone grafting is required dur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/28A61F2/30A61F2/34A61F2/46A61B34/10
CPCA61F2/28A61F2/34A61F2/30942A61F2/4601A61F2/4609A61F2/4644A61B34/10A61F2002/2835A61F2002/30985A61F2002/30948A61F2002/4633A61B2034/105A61B2034/108
Inventor 梁金龙邬江崔勇
Owner 中国人民解放军联勤保障部队第九二〇医院
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