Study on simulation method of knee hydrops based on biologcal impedance.
10.7507/1001-5515.201811044
- Author:
Li KE
1
;
Yuhuan LI
2
;
Qiang DU
2
;
Haiming LU
2
;
Cen WANG
2
Author Information
1. Institute of Biomedical and Electromagnetic Engineering, Shenyang University of Technology, Shenyang 110870, P.R.China.keli@sut.edu.cn.
2. Institute of Biomedical and Electromagnetic Engineering, Shenyang University of Technology, Shenyang 110870, P.R.China.
- Publication Type:Journal Article
- Keywords:
bioimpedance;
four-electrode measuring;
hydrops of the knee joint
- MeSH:
Animals;
Edema;
Electric Impedance;
Humans;
Knee;
Knee Injuries;
Knee Joint;
Rats
- From:
Journal of Biomedical Engineering
2019;36(6):1012-1017
- CountryChina
- Language:Chinese
-
Abstract:
The injury of the knee joint is usually accompanied with the generation of hydrops. The volume of hydrops can be used as a reference to evaluate the extent of knee joint injuries. Based on the principle of bioimpedance detection, in this paper, a new method is proposed to detect knee joint hydrops. Firstly, a three-dimensional model of the knee joint was established according to the physiological and anatomical structure of the knee joint. Secondly, a knee impedance detection system was constructed based on the four-electrode theory, and the relationship between the knee impedance change and the volume of hydrops was calculated by linear regression. Finally, the model of rat knee joint hydrops was established, and the knee joint impedance was measured under different hydrops content to deduce the relationship between the fluid content and the knee joint impedance. The fluid volume in the joint was calculated by measuring the knee joint impedance, and the error rate was less than 10%. The experimental results show that the method proposed in this paper can establish the relationship between the impedance of the knee and the volume of fluid and realize the detection of the fluid volume.
