Abstract
The anterior screw fixation of odontoid fractures is nowadays standard clinical operation. There are less biomechanical studies dealing with the problem whether one or two screws should be used for this type of stabilisation. This study used in vitro experiment and finite element simulation to investigate the bending stiffness in the sagital plane of stabilised odontoid fracture type II of the second cervical vertebra. The comparative study of one cortical screw and the cannulated one was performed. The results indicated that there are no significant differences between them. In addition, it seems from the bending stiffness point of view, tightening the screw to higher levels is quite useless, because the stiffness is not higher, but with higher stresses we can reached diminishing of the bone’s strength and stiffness, according to Wolff’s law of functional adaptation. Thus the most reasonable might be to tighten the screws to certain moment, as in the dental surgery is performed.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Preview
Unable to display preview. Download preview PDF.
References
Koivikko M (2005) Cervical spine injuries in adults: diagnostic imaging. PhD thesis
Cusick J., Yoganandan N. (2002) Biomechanics of the cervical spine Part 4: major injuries. Clinical Biomechanics 17: 1–20.
Yoganandan N. et al. (2005) Odontoid fracture in motor vehicle environments. Accident analysis and prevention 37: 505-514.
Morandi X. et al. (1998) Anterior screw fixation of odontoid fractures. Spine,
Sung J.K. (2005) Anterior screw fixation using Herbert screw for type II odontoid process fractures. Journal of Korean neurosurgery 37: 345-349
Shilpaker S. et al. (2005) Management of acute odontoid fracture: operative techniques and complication avoidance. Neurosurgery focus
Graziano G., Jaggers C., Lee B., Lynch M. (1993) A comparative study of fixation techniques for type II fractures of the odontoid process. Spine 18: 2383-2387
Doherty B. et al. (1993) A biomechanical study of odontoid fractures and fracture fixation. Spine 18: 178–184
Sasso R. et al. (1993) Biomechanics of odontoid fracture fixation. Spine 18: 1950–1953
Teo E., Ng H. (2001) First cervical vertebra fracture mechanism studies using finite element method. Journal of biomechanics 34: 13–21
Chen I., Lin R., Chang C. (2003) Biomechanical investigation of pedical screw – vertebrae complex: a finite element approach using bonded and contact interface conditions. Medical Engineering and Physics 25: 275–282
manual Marc software 2005r2
Gefen A. (2002) Optimizing the biomechanical compatibility of orthopedic screws for bone fracture fixation. Medical Engineering and Physics 24: 337–347
Lang L. et al. (2003) Finite element analysis to determine implant preload. The journal of prosthetic dentistry 90: 539–546
Author information
Authors and Affiliations
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2007 Springer-Verlag Berlin Heidelberg
About this paper
Cite this paper
Capek, L., Buchvald, P. (2007). Bending stiffness of odontoid fracture fixation with one cortical screw – numerical approach. In: Jarm, T., Kramar, P., Zupanic, A. (eds) 11th Mediterranean Conference on Medical and Biomedical Engineering and Computing 2007. IFMBE Proceedings, vol 16. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-73044-6_67
Download citation
DOI: https://doi.org/10.1007/978-3-540-73044-6_67
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-73043-9
Online ISBN: 978-3-540-73044-6
eBook Packages: EngineeringEngineering (R0)