Modeling method of necrotic femoral head repair model based on umbrella-shaped femoral head support

A technology for repairing models and modeling methods, applied in 3D modeling, instruments, image data processing, etc., can solve problems such as small support force, large trauma, and no solution

Inactive Publication Date: 2017-06-23
XIAN UNIV OF SCI & TECH
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Problems solved by technology

The memory metal nickel-titanium alloy (Ni-Ti) tennis ball designed by Wang Yan et al. is made of metal wire. Although the supporting area is relatively large, the supporting force is correspondingly small.
In addition, the metal tennis ball needs to open the femoral head, which is relatively traumatic
It can be seen that although there are many treatment options for avascular necrosis of the femoral head, there is no single most reliable solution. After verification by finite element analysis, many problems have been exposed

Method used

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  • Modeling method of necrotic femoral head repair model based on umbrella-shaped femoral head support
  • Modeling method of necrotic femoral head repair model based on umbrella-shaped femoral head support
  • Modeling method of necrotic femoral head repair model based on umbrella-shaped femoral head support

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Embodiment Construction

[0128] like figure 1 A modeling method of a necrotic femoral head repair model based on an umbrella-shaped femoral head support is shown, comprising the following steps:

[0129] Step 1. Acquisition of the three-dimensional model of the femoral head to be repaired: the NURBS surface model of the femoral head to be repaired is obtained by image processing equipment, and the obtained NURBS surface model is stored synchronously.

[0130] The femoral head to be repaired is a femoral head with femoral tissue necrosis area and pre-repaired with a femoral head supporter. The femoral head supporter is composed of an umbrella-shaped supporter 1 and a support sleeve 2 supporting the umbrella-shaped supporter 1. The umbrella-shaped supporter 1 is composed of a plurality of supporting ribs 3 and its lower end passes through an umbrella handle 4 Socketed with support sleeve 2, see figure 2 .

[0131] Step 2, establishment of a necrotic femoral head model: first, according to the shape ...

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Abstract

The invention discloses a modeling method of a necrotic femoral head repair model based on an umbrella-shaped femoral head supporter. The bone is the femoral head that has femoral tissue necrosis area and is pre-repaired with the femoral head supporter; Necrotic femoral head model; 3. Establishment of femoral head support model; 4. Establishment of necrotic femoral head implant model: establishment of necrotic femoral head implant model with implant channel and 3D model of implanted bone; 5. Necrotic femoral head repair Model building. The method of the invention has simple steps, reasonable design, convenient implementation and good use effect, and can easily and rapidly establish a repair model for implanting a femoral head supporter into a necrotic femoral head, and the established repair model is of high quality.

Description

technical field [0001] The invention relates to a modeling method, in particular to a modeling method of a necrotic femoral head repair model based on an umbrella-shaped femoral head supporter. Background technique [0002] There are many studies abroad on the treatment of avascular necrosis of the femoral head. Castro et al. from the Department of Plastic Surgery, Tulane University School of Medicine analyzed the efficacy of core decompression in the treatment of avascular necrosis of the femoral head through Meta-analysis, and conducted a statistical study on the efficacy of single core decompression surgery. The analysis showed that the success rate of core decompression was statistically better than that of conservative treatment, but it was still not the best treatment method. Meta-analysis is a kind of statistical method that synthesizes the results of many researches on the same subject with specific conditions. This analysis method is often used in statistical resea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/00
Inventor 龚晓燕吴哲杜东鹏薛河邢娟
Owner XIAN UNIV OF SCI & TECH
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