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Method for obtaining central axial line of anterior cruciate ligament based on linear fitting algorithm

An anterior cruciate ligament and linear fitting technology, applied in the field of computer-aided medicine, to improve curative effect, improve preoperative evaluation and planning, and reduce incidence

Inactive Publication Date: 2013-03-13
FIRST AFFILIATED HOSPITAL OF KUNMING MEDICAL UNIV
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Problems solved by technology

Although arthroscopic ACL reconstruction has a high success rate, there are still 10% to 15% failure rates and 10% to 20% revision rates reported in the literature.

Method used

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  • Method for obtaining central axial line of anterior cruciate ligament based on linear fitting algorithm
  • Method for obtaining central axial line of anterior cruciate ligament based on linear fitting algorithm
  • Method for obtaining central axial line of anterior cruciate ligament based on linear fitting algorithm

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Embodiment 1

[0035] 1. Experimental objects: 20 cases of normal double knee joint specimens from fresh adult cadavers (the age of death of the cadavers were 25-50 years old) were taken as the research objects, and traumatic fractures, tumors, degeneration, and deformities were excluded before the experiment.

[0036] 2. Software and computer operating environment:

[0037] Medical finite element simulation software Mimics 10.01 (Materialise Company, Belgium), reverse engineering software (Korea INUS Company), finite element analysis software ANSYS13.0 (American ANSYS Company).

[0038] 3. Computer configuration:

[0039] Intel(R) Core(TM) i5CPU M 430 2.27GHz 2.27GHz, graphic card ATI Mobility Radeon TM HD 5650 GRAPHICS 1G, hard disk 320G, memory 8G. Operating system Windows 7, 64 bit.

[0040] 4. Establishment of 3D digital model

[0041] The MRI tomographic image data of the knee joint nuclear magnetic resonance scan stored in accordance with the DICOM standard was imported into the ...

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Abstract

The invention discloses a method for obtaining a central axial line of an anterior cruciate ligament based on a linear fitting algorithm. The method comprises the steps of: first establishing a complete three-dimensional solid digital model of two knee joints of an STL (standard template library) format, leading in finite element analysis software for calculation to obtain a cross section of the ACL (anterior cruciate ligament) and the coordinates of the center of the cross section, fitting to obtain a center curve of the anterior cruciate ligament, solving the equation, calculating the coordinates of the center of a femur and tibia attachment point, and calculating the specific value of a planar angle by using a trigonometric function and the coordinates of the geometric center of a femur and tibia attachment surface. Accurate positioning of femur and tibia tunnels of the ACL can be realized. Preoperative planning, surgical simulation exercise, surgery teaching, guidance of actual surgical operations, post-operative rehabilitation and the like can be performed by adopting information of a virtual environment. The surgical accuracy can be improved, the approximately normal functions of the ACL can be reestablished, and the method is an effective new path for repair and reestablishment of the efficacy of the ACL.

Description

technical field [0001] The invention belongs to the technical field of computer-aided medicine, and relates to a preoperative planning virtual technology for anterior cruciate ligament reconstruction, in particular to a method for obtaining the central axis of anterior cruciate ligament through linear fitting calculation in a knee extension state. Background technique [0002] Anterior cruciate ligament (ACL) injury is a relatively common clinical injury that seriously affects the stability of the knee joint. Its incidence rate is relatively high, and it occupies a high proportion in competitive sports, traffic accident injuries and military training. . In our country, with the extensive development of national fitness campaign and the increase of traffic accidents, the injury of anterior cruciate ligament is increasing day by day, which has become one of the common frequently-occurring diseases in clinic. At present, the incidence of ACL injury in the general population in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 李彦林韩睿王国梁陈文栋王福科何川
Owner FIRST AFFILIATED HOSPITAL OF KUNMING MEDICAL UNIV
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