Title :
Bone-remodeling of lower-leg or foot for orthopedic osteotomy with external fixators
Author :
Mengqian Sun;Bing Li;Ying Hu;Hong Zhang
Author_Institution :
Shenzhen Graduate School, Harbin Institute of Technology, 518055, China
Abstract :
Although Ilizarov technique and external fixators have been popular applied in bone fractures and orthopaedic surgery currently, there are few literatures about laws of bone-remodelling after osteotomy when applied external fixation system based on Wolff´s law. However, Wolff´s law is one of the most basic theories in bone biomechanics and fracture healing Therefore, exploring the healing mechanism of broken bone under the function of external fixators may be a key role in achieving new breakthroughs of this technology. In this study, we built the mechanical model based on lower-leg or foot. Then, bone-remodelling algorithm of lower-leg or foot for orthopaedic osteotomy with external fixation system under the guidance of Wolff´s law was proposed. Through numerical simulations, the following findings were achieved: (1) the change of element density in loading position is mainly caused by the effect of `dead zone´, (2) the magnitude of loads directly influences bone mass and the location of wire component in external fixation system greatly affects distribution of bone density in the process of bone-remodelling, (3) the strain energy density tends to be uniformly distributed when reaching the remodelling equilibrium state.
Keywords :
"Finite element analysis","Strain","Bones","Bone tissue","Force","Algorithm design and analysis","Loading"
Conference_Titel :
Information and Automation, 2015 IEEE International Conference on
DOI :
10.1109/ICInfA.2015.7279736