High tibia osteotomy surface planning method and system and storage medium

By constructing a geometric constraint model for osteotomy parameters and a multi-parameter linkage mechanism, the problems of low parameter adjustment efficiency and logical conflicts in the preoperative planning of high tibial osteotomy were solved. Real-time pre-operative force line correction and safety detection of the lateral hinge were realized, ensuring the accuracy and safety of the surgical plan.

CN122096964APending Publication Date: 2026-05-29BEIJING CHUNLIZHENGDA MEDICAL INSTR
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Patent Information

Application Number
CN202610039730.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-01-13
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

The existing preoperative planning for high tibial osteotomy lacks a linkage mechanism for adjusting osteotomy parameters, resulting in low planning efficiency and easy logical conflicts. It is impossible to preview the force line correction effect in real time, and there is a lack of active safety testing of the lateral hinge and surgical instruments.

Method used

By constructing a geometric constraint model of osteotomy parameters and a multi-parameter linkage mechanism, the associated parameters are automatically calculated and updated. The minimum safety threshold control of the lateral hinge and the instrument interference detection based on the symbolic distance field are introduced to simulate the rotational motion of the distal tibia in order to calculate the corrected mechanical force line path of the lower limb.

Benefits of technology

This approach achieves synergistic improvement in osteotomy parameters, ensuring the biomechanical and anatomical safety of the plan, reducing the risks and time costs of surgical adjustments, and improving the accuracy and efficiency of the plan.

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Abstract

The invention relates to the technical field of medical instruments, and discloses a high tibia osteotomy surface planning method and system and a storage medium, and the method comprises the steps: firstly reconstructing a three-dimensional model based on a medical image, and constructing a local anatomical coordinate system and an initial osteotomy plane; then, an osteotomy parameter geometric constraint model is constructed, parameter interaction is processed through a linear constraint equation, and linkage updating and safety threshold boundary control of the osteotomy position and depth and the outer side hinge retention amount are achieved; a virtual opening model is established, lower limb mechanical force line path rehearsal is executed, and instrument interference detection is carried out based on a symbol distance field; and finally generating a navigation protocol. According to the method, the fracture risk of the outer hinge is effectively avoided through a parameter linkage mechanism, precise prediction of the force line correction effect and active avoidance of the surgical risk are achieved in combination with virtual kinematics simulation, and the precision and safety of preoperative planning are improved.
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