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Novel method for determining force line balance in total knee arthroplasty by finite element analysis

A total knee replacement, finite element technology, applied in the field of accurate determination of force lines by finite element analysis in total knee replacement, can solve problems such as difficult determination of force line balance, achieve easy operation, reduce postoperative complications, and meet The effect of individual differences

Inactive Publication Date: 2018-10-12
NANJING MEDICAL UNIV
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Problems solved by technology

[0006] Situations where it is difficult to determine the balance of force lines in node replacement

Method used

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  • Novel method for determining force line balance in total knee arthroplasty by finite element analysis
  • Novel method for determining force line balance in total knee arthroplasty by finite element analysis
  • Novel method for determining force line balance in total knee arthroplasty by finite element analysis

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Embodiment Construction

[0031] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0032] Such as Figures 1 to 2 As shown, the present invention provides a novel finite element analysis method for determining force line balance in total knee arthroplasty. Perform data processing on the imaging data, and conduct three-dimensional modeling through SolidWorks software, perform finite element analysis on the model, and select several positions of the analysis results as references; Finally, place the prosthesis at the knee joint, perform three-dimensional imaging and modeling, and perform finite element analysis on the model. From the results of the finite element analysis on the affected side, select several positions corresponding to the healthy side, and determine whether the two sides are balanced. Make conclusions about whether the current line of force is accurate, and make adjustments based on the conclusions.

[0033] The three-dimen...

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Abstract

The invention discloses a novel method for determining force line balance in total knee arthroplasty by finite element analysis. The method comprises the following steps of carrying out data acquisition and modelling on a leg at an uninjured side before operation; carrying out finite element stress analysis on a leg model on the uninjured side of a patient, and carrying out data acquisition and modeling on a replaced knee joint in an operation process; making a mirror image of the model on the uninured side correspond to an affected side, carrying out data analysis through a Fourier transform-high-pass filtering image enhancement algorithm, and judging whether a force line of a lower limb of the affected side is in a balanced state; if the force line of the lower limb of the affected sideis in an unbalanced state, prompting a proper bone repair or prosthesis adjustment position to a doctor through the leg model on the uninjured side, and finally, enabling the knee joint to be in the balanced state; and keeping the position unchanged, and carrying out surgical suture. According to the method, the accuracy of knee joint balance in the operation is improved, the service life of the postoperative prosthesis is prolonged, the postoperative complications are reduced, and the method plays an important role in improving the postoperative life quality of the patient.

Description

technical field [0001] The invention relates to the field of clinical total knee arthroplasty, in particular to a method for accurately determining force lines by finite element analysis in total knee arthroplasty. Background technique [0002] Total knee arthroplasty (TKA) uses materials such as metal, high molecular polyethylene, and ceramics to make artificial knee prostheses according to the shape, structure and function of human joints, and implant them into the human body through surgical techniques to relieve joint pain and correct joint deformity, restore joint function, and improve the quality of life of patients. TKA is often used to treat and improve severe knee pain, instability, deformity, such as rheumatoid arthritis, knee osteoarthritis, a few traumatic arthritis and other diseases, including two steps of osteotomy and soft tissue release, and finally Realize the recovery of lower limbs, maintain soft tissue balance, and achieve the purpose of knee joint bala...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/20
CPCG06T17/20G06T2210/41
Inventor 吴小玲竺明月李修寒刘志鹏王伟
Owner NANJING MEDICAL UNIV
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