Segmental body BIA device development for fracture detection.

Area of Science:

• Biomedical Engineering
• Medical Diagnostics
• Orthopedics

Background:

• Bone fractures pose a significant global health challenge.
• Conventional diagnostic methods like X-rays and CT scans have limitations including radiation exposure, cost, and accessibility.
• There is a need for innovative, non-invasive, and cost-effective bone fracture assessment tools.

Purpose of the Study:

• To develop and validate a novel, low-cost, portable, and non-invasive segmental bioelectrical impedance analysis (BIA) device.
• To assess the feasibility of using this BIA device for real-time monitoring of bone fracture healing.
• To provide an accessible alternative to conventional imaging techniques for bone fracture diagnosis and monitoring.

Main Methods:

• Designed a segmental BIA device utilizing the AD5933 impedance converter, a four-electrode configuration, and an ARM7 microcontroller.
• Integrated signal conditioning circuits and an LCD for real-time data visualization.
• Operated at a fixed frequency of 50 kHz to measure impedance and phase angle variations in knee fractures during healing stages.

Main Results:

• Technical validation using resistive and capacitive components showed measurement errors typically below 7%.
• Clinical validation with 125 fracture patients, including 20 knee fracture follow-ups, revealed significant differences in impedance and phase angle before and after healing.
• The system demonstrated reliable technical performance and clinical relevance.

Conclusions:

• The developed BIA device is a technically reliable, low-cost, and portable tool for non-invasive bone fracture monitoring.
• The system shows significant potential for real-time monitoring of bone healing.
• This technology offers a promising, accessible alternative to conventional imaging, particularly for rural and point-of-care settings.