Modeling method of necrosis caput femoris restoring model based on umbrella-shaped caput femoris supporter

Abstract

The invention discloses a modeling method of a necrosis caput femoris restoring model based on an umbrella-shaped caput femoris supporter. The modeling method comprises the steps that firstly, a three-dimensional model of a to-be-restored caput femoris is obtained, wherein the NURBS curved surface model of the to-be-restored caput femoris is obtained, the to-be-restored caput femoris is a caput femoris which exists in the thigh tissue necrosis area and is pre-restored by the caput femoris supporter, and the caput femoris supporter is composed of an umbrella-shaped supporter body and a supporting sleeve; secondly, the necrosis area needing to be separated is determined according to the shape of the umbrella-shaped supporter body, and a necrosis caput femoris model is established; thirdly, a caput femoris supporter model is established; fourthly, a necrosis caput femoris implantation model is established, wherein the necrosis caput femoris implantation model with an implantation channel and a three-dimensional model of an implanted bone are established; fifthly, the necrosis caput femoris restoring model is established. The modeling method is simple in step, reasonable in design, convenient to achieve and good in using effect, the restoring model of the caput femoris supporter implanted into the necrosis caput femoris can be easily, conveniently and quickly established, and the quality of the established restoring model is high.

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 support. Background technique

[0002] There are many studies abroad on the treatment of avascular necrosis of the femoral head. Castro and others of the Department of Plastic Surgery of 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 statistical research on the efficacy of single core decompression surgery. Analysis shows that the success rate of core decompression is statistically better than conservative treatment, but it is still not the best treatment. Meta analysis is a type of statistical method that integrates many research results of the same subject with specific conditions. This analysis method is often used for statistical research of clinical data, but because...

Examples

Embodiment Construction

[0128] Such as figure 1 The method for modeling a necrotic femoral head repair model based on an umbrella-shaped femoral head support is shown, including the following steps:

[0129] Step 1: Obtaining the three-dimensional model of the femoral head to be repaired: using image processing equipment to obtain the NURBS surface model of the femoral head to be repaired, and synchronously storing the obtained NURBS surface model.

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

[0131] Step 2: Establishment of the necrotic femoral head model: First, according to the shape of the u...

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 support. Background technique

[0002] There are many studies abroad on the treatment of avascular necrosis of the femoral head. Castro and others of the Department of Plastic Surgery of 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 statistical research on the efficacy of single core decompression surgery. Analysis shows that the success rate of core decompression is statistically better than conservative treatment, but it is still not the best treatment. Meta analysis is a type of statistical method that integrates many research results of the same subject with specific conditions. This analysis method is often used for statistical research of clinical data, but because...

Examples

Embodiment Construction

[0128] Such as figure 1 The method for modeling a necrotic femoral head repair model based on an umbrella-shaped femoral head support is shown, including the following steps:

[0129] Step 1: Obtaining the three-dimensional model of the femoral head to be repaired: using image processing equipment to obtain the NURBS surface model of the femoral head to be repaired, and synchronously storing the obtained NURBS surface model.

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

[0131] Step 2: Establishment of the necrotic femoral head model: First, according to the shape of the u...

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