Distraction osteogenesis device to estimate the axial stiffness of the callus in Vivo

Medical Engineering & Physics
J Mora-MacíasJ Domínguez

Abstract

Knowing the evolution of callus stiffness is very important in distraction osteogenesis and bone healing. It allows the characterization of the bone maturation process and the assessment of the moment to retire the fixator. A new distractor device that monitors the callus axial stiffness is presented in this study. It quantifies the callus stiffness during the bone transport process with some advantages over previous methods to assess stiffness during simple distraction and bone healing. This device avoids a misalignment between bone segments, uses real load conditions, monitors forces continuously, does not involve radiation for patients, and allows the study of the complete distraction process, i.e., the distraction and consolidation phases. The device was calibrated in vitro simulating different real bone load conditions depending on the stage of the process. The stiffness of the callus could be estimated for values between 4.2 N/mm and 9066.8 N/mm. The average relative error in measurements carried out in in vitro calibration tests was 7.8% during the distraction phase and 9.5% during the consolidation phase. These results improve the accuracy and increase the callus stiffness range of estimation with respect to other devic...Continue Reading

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Feb 5, 2015·Annals of Biomedical Engineering·J Mora-MacíasJ Domínguez

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Citations

May 10, 2015·Annals of Biomedical Engineering·J Mora-MacíasJ Domínguez
Jul 3, 2018·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·Javier Martínez-ReinaEsther Reina-Romo
May 11, 2020·Annals of Biomedical Engineering·J Mora-MacíasE Reina-Romo
Aug 19, 2020·Annals of Biomedical Engineering·Pablo Blázquez-CarmonaEsther Reina-Romo
Aug 23, 2020·Sensors·Pablo Blázquez-CarmonaEsther Reina-Romo
Jun 15, 2019·International Journal for Numerical Methods in Biomedical Engineering·Juan Mora-MacíasMaría Esther Reina-Romo
Oct 29, 2020·Annals of Biomedical Engineering·Pablo Blázquez-CarmonaEsther Reina-Romo

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