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Related Experiment Video

Updated: Feb 25, 2026

Pedicle Screw Placement Using an Augmented Reality Head-Mounted Display in a Porcine Model
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Pediatric Lumbar Pedicle Screw Placement Using Navigation Templates: A Cadaveric Study.

Xing Wang1,2, Jun Shi3, Shojie Zhang1,2

  • 1Department of Anatomy, Basic Medical College, Inner Mongolia Medical University, Hohhot 010059, Inner Mongolia, China.

Indian Journal of Orthopaedics
|August 10, 2017
PubMed
Summary

Custom 3D navigation templates precisely guide lumbar pedicle screw placement in children. This innovative technique enhances accuracy and safety compared to conventional methods for pediatric spinal surgery.

Keywords:
Bone screwChildrencadavercomputer assistedlumbar spinenavigation templatepediatric surgeryspine

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Area of Science:

  • Orthopedic Surgery
  • Pediatric Spine Surgery
  • Medical Imaging

Background:

  • Pedicle screw fixation is standard for adult spinal conditions but challenging in children due to spinal growth and anatomical differences.
  • 3D reconstruction and patient-specific navigation templates can improve pediatric pedicle screw placement success rates.

Purpose of the Study:

  • To develop and evaluate a precise method for lumbar pedicle screw placement in children using computer-aided design and rapid prototyping.

Main Methods:

  • CT scans of pediatric cadaver specimens were used for 3D reconstruction.
  • Pedicle screws were placed using conventional methods versus custom-designed navigation templates derived from reverse engineering.

Main Results:

  • All 20 pedicle screws placed using navigation templates were accurately positioned.
  • Three of 20 pedicle screws placed conventionally perforated the pedicle, indicating lower accuracy.

Conclusions:

  • Custom navigation templates offer a simple, accurate, and personalized approach for pediatric lumbar pedicle screw placement.
  • This technique presents a feasible advancement for pediatric spinal surgery.