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首页> 中文期刊> 《中华创伤杂志（英文版）》 >Rapid prototyping drill guide template for lumbar pedicle screw placement

Rapid prototyping drill guide template for lumbar pedicle screw placement

         
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摘要

To develop a novel method of spinal pedical stereotaxy by reverse engineering and rapid prototyping techniques, and to validate its accuracy by experimental and clinical studies. Methods: A 3D reconstruction model for the desired lumbar vertebra was generated by using the Mimics 10.11 software, and the optimal screw size and orientation were determined using the reverse engineering software. Afterwards, a drill template was created by reverse engi-neering principle, whose surface was the antitemplate of the vertebral surface. The drill template and its correspond-ing vertebra were manufactured using the rapid prototyping technique. Results: The accuracy of the drill template was con-firmed by drilling screw trajectory into the vertebral biomodel preoperatively. This method also showed its ability to cus-tomize the placement and size of each screw based on the unique morphology of the lumbar vertebra.The drill tem-plate fits the postural surface of the vertebra very well in the cadaver experiment. Postoperative CT scans for controlling the pedicle bore showed that the personalized template had a high precision in cadaver experiment and clinical application. No misplacement occurred by using the per-sonalized template. During surgery, no additional computer assistance was needed.Conclusions: The authors have developed a novel drill template for lumbar pedicle screw placement with good applicability and high accuracy. The potential use of drill templates to place lumbar pedicle screws is promising. Our methodology appears to provide an accurate technique and trajectory for pedicle screw placement in the lumbar spine.

著录项

  • 来源
    《中华创伤杂志（英文版）》 |2009年第3期|177-180|共4页
  • 作者

    LU Sheng; XU Yong-qing; ZHANG Yuan-zhi; LI Yan-bing; SHI Ji-hong; CHEN Guo-ping; CHEN Yu-bing;

  • 作者单位

    Department of Orthopedics, Kunming General Hospital, Chengdu Military command of PLA, Kunming 650032, China;

    Department of Orthopedics, Kunming General Hospital, Chengdu Military command of PLA, Kunming 650032, China;

    Department of Orthopaedics, First Hospital Affiliated to the Inner Mongolia Medical College, Hohhot, Inner Mongolia Autonomous Region, China;

    Department of Anatomy, Nanhua University, Henyang, China;

    Department of Orthopedics, Kunming General Hospital, Chengdu Military command of PLA, Kunming 650032, China;

    Department of Orthopedics, Kunming General Hospital, Chengdu Military command of PLA, Kunming 650032, China;

    Department of Orthopedics, Kunming General Hospital, Chengdu Military command of PLA, Kunming 650032, China;

  • 原文格式 PDF
  • 正文语种 chi
  • 中图分类 外科学;
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