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Novel synthetic vertebrae provide realistic haptics for pedicle screw placement

Standard

Novel synthetic vertebrae provide realistic haptics for pedicle screw placement. / Hollensteiner, Marianne; Augat, Peter; Furst, David; Esterer, Benjamin; Gabauer, Stefan; Puschel, Klaus; Schrodl, Falk; Schrempf, Andreas.

in: Conf Proc IEEE Eng Med Biol Soc, Jahrgang 2017, 07.2017, S. 46-49.

Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung

Harvard

Hollensteiner, M, Augat, P, Furst, D, Esterer, B, Gabauer, S, Puschel, K, Schrodl, F & Schrempf, A 2017, 'Novel synthetic vertebrae provide realistic haptics for pedicle screw placement', Conf Proc IEEE Eng Med Biol Soc, Jg. 2017, S. 46-49. https://doi.org/10.1109/EMBC.2017.8036759

APA

Hollensteiner, M., Augat, P., Furst, D., Esterer, B., Gabauer, S., Puschel, K., Schrodl, F., & Schrempf, A. (2017). Novel synthetic vertebrae provide realistic haptics for pedicle screw placement. Conf Proc IEEE Eng Med Biol Soc, 2017, 46-49. https://doi.org/10.1109/EMBC.2017.8036759

Vancouver

Hollensteiner M, Augat P, Furst D, Esterer B, Gabauer S, Puschel K et al. Novel synthetic vertebrae provide realistic haptics for pedicle screw placement. Conf Proc IEEE Eng Med Biol Soc. 2017 Jul;2017:46-49. https://doi.org/10.1109/EMBC.2017.8036759

Bibtex

@article{456dafae3fa44086997e3a9493b2a01c,
title = "Novel synthetic vertebrae provide realistic haptics for pedicle screw placement",
abstract = "During vertebral surgery, misplaced pedicle screws can harm vital neural and vascular structures. Haptic distinction between cortical and cancellous bone structures is therefore essential for correct screw placement. This tactile experience during pedicle screw placement can be obtained by training on human or animal specimens even if expensive or ethically questionable. In this study, novel synthetic vertebrae were evaluated within a hybrid simulator to provide realistic haptics for the training of spine surgeries. Synthetic vertebrae were custommade of calcium powder-based composites imitating both, cancellous and cortical bone. The mechanical properties of synthetic surrogates were validated for pedicle screw placement and cement augmentation and were compared with those obtained from human vertebrae and insertion torques were analyzed. In human vertebrae pedicle screw torque measurements resulted in mean torque slopes of 82±33Nm/m. Calcium carbonate-based materials achieved lower torques than the human bone whereas calcium phosphate-based bone surrogates showed comparable results. A further differentiation of the calcium phosphate-based vertebrae revealed, that synthetic vertebrae with lower amounts of blowing agent, achieved suitable torques (83 ± 28Nm/m) in comparison to the human reference (p = 0.39). Cement application and subsequent fluoroscopy images confirmed, that the cancellous core of the synthetic vertebrae enabled cement augmentation. In conclusion, our findings suggest, that the artificial bone samples mimic the properties of human bone during pedicle screw placement and cement augmentation and are therefore suitable as synthetic vertebrae in a hybrid surgical simulator.",
keywords = "Journal Article",
author = "Marianne Hollensteiner and Peter Augat and David Furst and Benjamin Esterer and Stefan Gabauer and Klaus Puschel and Falk Schrodl and Andreas Schrempf",
year = "2017",
month = jul,
doi = "10.1109/EMBC.2017.8036759",
language = "English",
volume = "2017",
pages = "46--49",

}

RIS

TY - JOUR

T1 - Novel synthetic vertebrae provide realistic haptics for pedicle screw placement

AU - Hollensteiner, Marianne

AU - Augat, Peter

AU - Furst, David

AU - Esterer, Benjamin

AU - Gabauer, Stefan

AU - Puschel, Klaus

AU - Schrodl, Falk

AU - Schrempf, Andreas

PY - 2017/7

Y1 - 2017/7

N2 - During vertebral surgery, misplaced pedicle screws can harm vital neural and vascular structures. Haptic distinction between cortical and cancellous bone structures is therefore essential for correct screw placement. This tactile experience during pedicle screw placement can be obtained by training on human or animal specimens even if expensive or ethically questionable. In this study, novel synthetic vertebrae were evaluated within a hybrid simulator to provide realistic haptics for the training of spine surgeries. Synthetic vertebrae were custommade of calcium powder-based composites imitating both, cancellous and cortical bone. The mechanical properties of synthetic surrogates were validated for pedicle screw placement and cement augmentation and were compared with those obtained from human vertebrae and insertion torques were analyzed. In human vertebrae pedicle screw torque measurements resulted in mean torque slopes of 82±33Nm/m. Calcium carbonate-based materials achieved lower torques than the human bone whereas calcium phosphate-based bone surrogates showed comparable results. A further differentiation of the calcium phosphate-based vertebrae revealed, that synthetic vertebrae with lower amounts of blowing agent, achieved suitable torques (83 ± 28Nm/m) in comparison to the human reference (p = 0.39). Cement application and subsequent fluoroscopy images confirmed, that the cancellous core of the synthetic vertebrae enabled cement augmentation. In conclusion, our findings suggest, that the artificial bone samples mimic the properties of human bone during pedicle screw placement and cement augmentation and are therefore suitable as synthetic vertebrae in a hybrid surgical simulator.

AB - During vertebral surgery, misplaced pedicle screws can harm vital neural and vascular structures. Haptic distinction between cortical and cancellous bone structures is therefore essential for correct screw placement. This tactile experience during pedicle screw placement can be obtained by training on human or animal specimens even if expensive or ethically questionable. In this study, novel synthetic vertebrae were evaluated within a hybrid simulator to provide realistic haptics for the training of spine surgeries. Synthetic vertebrae were custommade of calcium powder-based composites imitating both, cancellous and cortical bone. The mechanical properties of synthetic surrogates were validated for pedicle screw placement and cement augmentation and were compared with those obtained from human vertebrae and insertion torques were analyzed. In human vertebrae pedicle screw torque measurements resulted in mean torque slopes of 82±33Nm/m. Calcium carbonate-based materials achieved lower torques than the human bone whereas calcium phosphate-based bone surrogates showed comparable results. A further differentiation of the calcium phosphate-based vertebrae revealed, that synthetic vertebrae with lower amounts of blowing agent, achieved suitable torques (83 ± 28Nm/m) in comparison to the human reference (p = 0.39). Cement application and subsequent fluoroscopy images confirmed, that the cancellous core of the synthetic vertebrae enabled cement augmentation. In conclusion, our findings suggest, that the artificial bone samples mimic the properties of human bone during pedicle screw placement and cement augmentation and are therefore suitable as synthetic vertebrae in a hybrid surgical simulator.

KW - Journal Article

U2 - 10.1109/EMBC.2017.8036759

DO - 10.1109/EMBC.2017.8036759

M3 - SCORING: Journal article

C2 - 29059807

VL - 2017

SP - 46

EP - 49

ER -