Knee Angle Measurement for Knee Implants

Abstract

The Knee angle project was carried out at Thomas More University in Belgium. The aim of the project was to measure the change in rotational angle of the knee prosthesis and create a stable data reading between sensors, ADC (analog digital converter), microcontroller and a wireless module. In addition, the project was aimed at presenting readable and understandable code flow with a development of better performance. The Knee measurement system for knee implant reduces knee replacement complications and expenses. Also, it provides closer control and visualization of knee prosthesis so that it will be easy to improve patient health. The thesis explains the devices and methods used in this project.

The development of the knee angle measurement system comprised of four parts; Analog front end, sensor part, microcontroller and wireless module. Hardware devices and software applications were used in testing and analyzing the results, for example- Saleae logic analyzer, USB to UART converter and LabVIEW.

The project showed the expected result with complete functionality of the wireless module and the sensor with a stable change in amplitude. The analog to digital converter had minor SPI timing problems that can be solved by a closer study of the timing properties of SPI in the ADS.