Measurement system and measurement method for lower limb force line angle

Abstract

The invention relates to the field of orthopedic clinical lower limb force line detection, and discloses a lower limb force line angle measuring system which comprises a knee joint fixing frame, an ankle joint fixing frame, a data processing center and a display module. The knee joint fixing frame comprises a knee joint elastic fixing body, and the two sides of the knee joint elastic fixing body are each provided with a sensing unit. The ankle joint fixing frame comprises an ankle joint elastic fixing body, and the two sides of the ankle joint elastic fixing body are each provided with a sensing unit. The four sensing units are connected with the data processing center, and the data processing center is used for obtaining a first connecting line between the center of the femoral head and the center of the knee joint and a second connecting line between the center of the knee joint and the center of the ankle joint and calculating the included angle between the first connecting line and the second connecting line. The invention further discloses a measuring method thereof, and the problems that an existing device is tedious in operation step, the sensor needs to be fixed to the bone invasively, and the force line is not suitable for being determined in real time in an operation are solved.

Description

technical field [0001] The invention relates to the field of detection of force lines of lower limbs in clinical orthopedics, and discloses a measurement system and method for measuring the angle of force lines of lower limbs. Background technique [0002] Osteoarthritis of the knee is a slow-moving joint disease characterized by degeneration and loss of knee cartilage and regeneration of joint margins and subchondral bone. The clinical manifestations are mainly knee joint pain, deformity, and dysfunction. It is treated with clinical operations such as artificial knee replacement and high tibial osteotomy. [0003] Whether it is knee replacement or high tibial osteotomy planning, implementation, and postoperative effect evaluation, accurate judgment of lower limb alignment is an essential process. The line of force of the lower limbs refers to the line connecting the center of the femoral head to the center of the ankle joint. The normal line of force of the lower limbs sho...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a measurement system and method for measuring the force line angle of the lower limbs, which solves the problem that the existing device has cumbersome operation steps, requires invasive fixing of the sensor to the bone, and is not suitable for real-time determination of the force line during the operation.

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