Bone Fracture Detection by Electrical Bioimpedance: Measurements in Ex-Vivo Mammalian Femur

DELLOSA ANTONIO H; CONCU ALBERTO; DOBARRO FERNANDO; FELICE CARMELO JOSÉ

Manizales

Congreso; 17th International Conference on Electrical Bioimpedance. ICEBI 2019; 2019

To simulate a limb, two phantoms of bovine femurs (one with anintact bone and the other with a bone sawn in two) were constructed and noninvasiveElectrical Impedance Spectroscopy measurements were taken on themin order to identify differences in their respective Cole Cole diagrams. Impedancespectroscopy was performed by a frequency sweep between 1 Hz and65 kHz at a fixed current of 1 mA. The results obtained show wide differencesin the Cole Cole diagrams of both phantoms (intact and fractured bone), especiallyconcerning the real component of the impedance, which was always lowerin the fractured femur than the whole one around the bones? section correspondingto that of the lesion in both femurs. These superficial (non-invasive)measurements correspond to the base measurements of electrical impedancespectroscopy and they could, in turn, correspond to what occurs in mammalsimmediately after a fracture occurs, i.e. a dramatic increase in electrical conductivitydue to the diffusion into the fracture site of more conductive materialssuch as the blood and the extravascular fluids.