Abstract
Vertebroplasty is being increasingly used for consolidation of osteoporotic vertebrae or other pathological findings; for example, in bone cancer. In this chapter we present a combination of theoretical considerations and in vivo and ex vivo studies on cement injection. The unexpected results reflect the fact that approximately 95% of the overall injection pressure is necessary for cement delivery through the cannula, and only approximately 5% for the dispersion of cement in the spongiosa. One of our most important findings is that the process of cement injection makes conflicting demands on bone cements, which are required to be more viscous and less viscous at the same time. A low viscosity eases cement delivery through the injection cannula, whereas a high viscosity reduces the risk of cement leakage out of the vertebra. The challenge therefore is to develop biomaterials, techniques and/ or devices that can overcome or manage the conflicting demands concerning cement viscosity.
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Baroud, G., Schleyer, A., Wolf, S. (2008). Biomechanics. In: Becker, S., Ogon, M. (eds) Balloon Kyphoplasty. Springer, Vienna. https://doi.org/10.1007/978-3-211-74221-1_4
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DOI: https://doi.org/10.1007/978-3-211-74221-1_4
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