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Technical Brief

New Pedicle Screw Design With Expandable Shell for Low Bone Quality1

[+] Author and Article Information
Teyfik Demir, Mehmet F. Örmeci

Department of Mechanical Engineering,
TOBB University of Economics and Technology,
Ankara 06510, Turkey

Accepted and presented at the Design of Medical Devices Conference (DMD2014), Minneapolis, MN, April 7–10, 2014.

Manuscript received February 21, 2014; final manuscript received March 3, 2014; published online April 28, 2014. Editor: Arthur G. Erdman.

J. Med. Devices 8(2), 020935 (Apr 28, 2014) (2 pages) Paper No: MED-14-1026; doi: 10.1115/1.4026997 History: Received February 21, 2014; Revised March 03, 2014

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References

Bartleson, J. D., and Gordon Deen, H., 2009, Spine Disorders Medical and Surgical Management, Cambridge University Press, New York.
Hu, Y., He, X. F., Ma, W. H., Xu, R. M., Ruan, Y. P., Feng, J. X., and Yang, S. H., 2009, “Comparison Study of Biomechanical Test Among Fixation Techniques of Three Types Screw of Posterior Approach for C2,” Zhongguo Gu Shang, 22(1), pp. 17–20.
Örmeci, M. F., Demir, T., and Arslan, A. K., 2013, “In-Vitro Investigation of Fusion Effect on Pedicle Screws in Terms of Pullout Strength,” IWPMEO II: International Workshop on the Physics Based Modeling of Material Properties & Experimental Observations, Antalya, Turkey, May 15–17.

Figures

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Fig. 1

3D model of novel fixation system (a) and photograph of manufactured revision (b)

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Fig. 2

Photograph of tested sample after static pullout test according to ASTM F543

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Fig. 3

Mean pullout comparison of revisions and classical pedicle screw

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