Application of a novel customized guide template in percutaneous pedicle screw placement: an in vitro study

6 pages•Published: July 12, 2018

Su-Hua Wu, Guo Zheng, Jian-Hua Chen and Sheng-Hai Wang

Abstract

In open surgery for spine stabilization, the pedicle screws are often placed using patient-specific guide templates since they can improve the screw placement accuracy and simplify surgery. However, the conventional fit-and-lock template requires full exposure of the bony structures and is therefore not suitable for minimally invasive procedures. In this study, we constructed a novel guide template for percutaneous pedicle screw placement. Its feasibility and the accuracy of template-assisted pedicle screw placement were assessed using an excised calf spine model. As a result, all inserted guide wires and 27 of 30 simulated screws (90%) were completely in the pedicle. The remaining screws (10%) penetrated by less than 2 mm. The average distance and angular deviations of the guide wires were 1.46±0.60 mm and 1.10±0.84°. Our study demonstrate that this novel guide template is technically feasible and enhances the accuracy of percutaneous pedicle screw placement. Moreover, it may simplify the surgery and minimize intraoperative radiation. Further research on its clinical applications is warranted.

Keyphrases: 3d printing, computer assisted technique, minimally invasive spine surgery, percutaneous technique, personalized guide template, rapid prototyping

In: Wei Tian and Ferdinando Rodriguez Y Baena (editors). CAOS 2018. The 18th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery, vol 2, pages 236-241.

Links:	https://easychair.org/publications/paper/wFCR
	https://doi.org/10.29007/qzxg

BibTeX entry

@inproceedings{CAOS2018:Application_novel_customized_guide,
  author    = {Su-Hua Wu and Guo Zheng and Jian-Hua Chen and Sheng-Hai Wang},
  title     = {Application of a novel customized guide template in percutaneous pedicle screw placement: an in vitro study},
  booktitle = {CAOS 2018. The 18th Annual Meeting of the International Society for Computer Assisted Orthopaedic Surgery},
  editor    = {Wei Tian and Ferdinando Rodriguez Y Baena},
  series    = {EPiC Series in Health Sciences},
  volume    = {2},
  publisher = {EasyChair},
  bibsource = {EasyChair, https://easychair.org},
  issn      = {2398-5305},
  url       = {/publications/paper/wFCR},
  doi       = {10.29007/qzxg},
  pages     = {236-241},
  year      = {2018}}

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