Measuring method for inclination angle of lower limb lateral force line based on single navigation module

Abstract

The invention discloses a measuring method for an inclination angle of a lower limb lateral force line based on a single navigation module, and belongs to the field of orthopedic inclination angle detection. According to the method, an orthopedic locator is fixed to a distal femur by using fixing nails, the lower limb force line navigation module is stuck into the orthopedic locator, and motion parameters are measured through the navigation module; a fixing unit is fixed on a tibia, and a position between a medial malleolus and a lateral malleolus of the bottom of the tibia is used as a measurement initial position of a sensor; and a connecting rod is driven to move to make a touch unit respectively contact with the initial position, the medial malleolus and the lateral malleolus of the bottom of the tibia, the obtained motion parameters are measured by the navigation module, so that an inclination angle of the tibia and an inclination angle of the femur can be accurately measured, andthe lower limb lateral force line can be determined.

Description

technical field [0001] The invention relates to the field of orthopedic inclination detection, more specifically, a method for measuring the inclination of the lateral force line of the lower limb based on a single navigation module. Background technique [0002] Joint replacement surgery often involves replacing a patient's joint with one or more prosthetic joint components. In the process of knee replacement, the lateral force line of the lower limb is a concern of orthopedic surgeons, and the placement of prostheses according to the lateral force line of the lower limb is the key to the success of the operation. For knee replacement surgery, if you want to improve the success rate and make the joint replacement more accurate, the key is to find the position of the force line on the side of the human tibia. [0003] At present, doctors often rely on personal experience to judge the connection position of artificial joints. Based on experience and subjective judgment, ther...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the deficiency in the prior art that the inclination angle of the lateral force line of the lower limb cannot be accurately measured and judged, to provide a method for measuring the inclination angle of the lateral force line of the lower limb based on a single navigation module, and to fix the femoral inclination measuring device on the femur At the far end, the navigation module collects motion parameters from static to accelerated motion, and determines the inclination of the femur; fixes the tibial inclination measurement device on the tibia, adjusts the connecting rod and drives the navigation module to move at the same time, and the navigation module collects every time the touch unit touches. motion parameters at each position, and determine the inclination of the tibia; then, a single navigation module can be used to accurately measure the inclination of the tibia and the inclination of the femur, and then determine the situation of the lateral force line of the lower limbs.

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