Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images

Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images Publisher Pubmed

Daemi N¹ ; Ahmadian A¹ ; Mirbagheri A¹ ; Ahmadian AH² ; Saberi H³ ; Amidi F⁴ ; Alirezaie J⁵

Show Affiliations

1. Department of Biomedical Engineering and Medical Physics, Tehran University of Medical Sciences, Research Centre for Biomedical Technology and Robotics, Iran
2. Department of Mechanical Engineering, Sharif University of Technology, Tehran, Iran
3. Department of Neurosurgery, Imam Khomeini Hospital, Tehran University of Medical Sciences, Iran
4. Department of Anatomy, Tehran University of Medical Sciences, Iran
5. Department of Electrical Engineering, Ryerson University, Toronto, Canada

Source: Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS Published:2015

Abstract

Spinal fusion permanently connects two or more vertebrae in spine to improve stability, correct a deformity or reduce pain by immobilizing the vertebrae through pedicle screw fixation. Pedicle screws should be inserted very carefully to prevent possible irrecoverable damages to the spinal cord. Surgeons use CT/fluoroscopic images to find how to insert the screws safely. However, there is still human error, as determining precise trajectory in 3D space is difficult because of asymmetric structure of pedicle. In this study we attempt to propose a shape based method to help the surgeons to find the more accurate and safe path for screw insertion that minimizes the risk or invasiveness of the surgery using pre-operative CT images. We extracted two features for insertion paths from CT images, named 'safety margin' and 'pedicular screw fixation strength'. By using weighted k-means different paths were clustered and compared with each other. Results of comparison between those paths obtained from surgeon's pre-operative planning, intra operative and the proposed method proves a great improvement on the rate of success in reaching a suitable insertion trajectory by using our method. It is observed that the risk of damage in intra operative stage can be potentially high and it can be reduced considerably by using the proposed planning approach. © 2015 IEEE.

Style	Citing Format
MLA	Daemi N, et al.. "Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images." Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS, vol. 2015-November, no. , 2015, pp. 3639-3642.
APA	Daemi N, Ahmadian A, Mirbagheri A, Ahmadian AH, Saberi H, Amidi F, Alirezaie J (2015). Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS, 2015-November(), 3639-3642.
Chicago	Daemi N, Ahmadian A, Mirbagheri A, Ahmadian AH, Saberi H, Amidi F, Alirezaie J. "Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images." Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS 2015-November, no. (2015): 3639-3642.
Harvard	Daemi N et al. (2015) 'Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images', Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS, 2015-November(), pp. 3639-3642.
Vancouver	Daemi N, Ahmadian A, Mirbagheri A, Ahmadian AH, Saberi H, Amidi F, et al.. Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images. Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS. 2015;2015-November():3639-3642.
BibTex	@article{ author = {Daemi N and Ahmadian A and Mirbagheri A and Ahmadian AH and Saberi H and Amidi F and Alirezaie J}, title = {Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images}, journal = {Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS}, volume = {2015-November}, number = {}, pages = {3639-3642}, year = {2015} }
RIS	TY - JOUR AU - Daemi N AU - Ahmadian A AU - Mirbagheri A AU - Ahmadian AH AU - Saberi H AU - Amidi F AU - Alirezaie J TI - Planning Screw Insertion Trajectory in Lumbar Spinal Fusion Using Pre-Operative Ct Images JO - Proceedings of the Annual International Conference of the IEEE Engineering in Medicine and Biology Society# EMBS VL - 2015-November IS - SP - 3639 EP - 3642 PY - 2015 ER -

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