Method for determining force line balance through finite element analysis in total knee replacement

Abstract

The invention discloses a method for determining force line balance through finite element analysis in total knee replacement. The method comprises the steps of before the operation, conducting data collecting and modeling on the legs of the uninjured sides, conducting finite element stress analysis on an uninjured side leg model of a patient, and conducting data collecting and modeling on the knee joint which is subjected to replacement in the operation process; corresponding images of the uninjured side model to the injured side, conducting data analysis through a Gaussian-Laplacian pyramidmethod, and judging whether the force line of the lower limb of the injured side is in a balanced state or not; if not, giving a doctor a prompt about properly conducting bone repairing or adjusting the prosthesis position through the uninjured side leg model, so that finally, the knee joint is in the balanced state. The position is kept unchanged for operation suturing. By means of the method, the accuracy of knee joint balancing in the operation is improved, the service life of the prosthesis of the patient after the operation is prolonged, the postoperative complications are reduced, and the effect of improving the living quality of the patient after the operation is improved.

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...

AI Technical Summary

Problems solved by technology

This method needs to be measured and drawn in conjunction with the patient's X-ray film, and it is usually difficult to accurately measure the F angle and T angle of the affected leg of the patient during the operation due to lesions, and it may change with the body's height, shortness, fatness and thinness, and there are great individual differences. complicated process

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