Titanium implant structure optimization method based on age factors

Abstract

The invention discloses a titanium implant structure optimization method based on age factors. The method comprises the following steps of S1, carrying out geometric modeling on the femoral implant; s2, establishing a finite element model of an initial age group; S3, establishing a finite element model of the multi-age femoral implant; and S4, evaluating the indexes and optimizing the structure ofthe titanium implant. According to the invention, the influence of the change of the age of a patient on the stress distribution of the titanium implant is studied; a method for optimizing the internal structure of the titanium implant is provided for a to-be-optimized region in the titanium implant; the structural design of the titanium implant is perfected, the service life of the titanium implant in a human body is prolonged, the risk that the titanium implant loses efficacy in the bearing process is reduced, and meanwhile the situation that when the structure of the titanium implant is optimized, the yield stress of a non-stress concentration area is too large is avoided.

Description

technical field [0001] The invention relates to the design field of lower limb implants, in particular to a method for optimizing the structure of titanium implants. Background technique [0002] At present, the research on titanium implants for lower extremities mainly involves the following aspects: research on biocompatibility between titanium implants and human body, research on porosity of titanium implants, design of titanium implant shapes, postoperative loading on implants The influence of conditions on osseointegration, the influence of age on osseointegration, etc. When studying the influence of age factors on titanium implants, previous studies were only limited to the postoperative recovery stage, such as the effect of aging changes on the combination of implants and bone tissue, the amount of new bone formation around the implant and the rate of osseointegration Differences with age, etc., but long-term placement of implants in the same patient were not conside...

AI Technical Summary

Problems solved by technology

When studying the influence of age factors on titanium implants, previous studies were only limited to the postoperative recovery stage, such as the effect of aging changes on the combination of implants and bone tissue, the amount of new bone formation around the implant and the rate of osseointegration Differences with age, etc., but long-term placement of implants in the same patient is not considered

As the patient's age increases, the material parameters and geometric parameters of lower limb bone tissue and muscle tissue will change, and this change will also change the stress state of the implant, thereby increasing the probability of partial failure of titanium implants, and titanium implants The service life of the implant will also be reduced to a certain extent. If the method of changing the porosity of the titanium implant as a whole is adopted, the yield stress of the original non-stress concentration area will be increased, and the local stress shielding effect will be increased. Based on the above It is necessary to study the influence of long-term age factors on titanium implants, and propose a reasonable structural optimization plan for the influence of age factors on titanium implants to improve their service life

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