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Related Experiment Video

Updated: Jun 24, 2025

A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
06:24

A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement

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Sensorless Based Haptic Feedback Integration In Robot-assisted Pedicle Screw Insertion For Lumbar Spine Surgery: A

Sakol Nakdhamabhorn1, Branesh M Pillai1, Areesak Chotivichit2

  • 1Department of Biomedical Engineering, Center for Biomedical and Robotics Technology (BART LAB), Faculty of Engineering, Mahidol University, Nakhon Pathom 73170, Thailand.

Computational and Structural Biotechnology Journal
|June 6, 2024
PubMed
Summary

This study introduces a robot-assisted system with sensorless haptic feedback for pedicle screw insertion, significantly improving accuracy and reducing radiation exposure in spinal surgery.

Keywords:
Bilaterally controlMinimally invasive surgeryPedicle screw insertionRobot-assisted surgerySurgical roboticsTele-operation

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Area of Science:

  • Robotics in Surgery
  • Spinal Surgery
  • Medical Device Technology

Background:

  • Pedicle screw fixation is crucial for spinal pathologies but faces challenges like limited visibility and high radiation exposure.
  • Current methods rely heavily on surgeon's hand-eye coordination, leading to potential inaccuracies.
  • Fluoroscopy X-ray guidance contributes to significant radiation exposure for patients and staff.

Purpose of the Study:

  • To introduce a novel robot-assisted system for pedicle screw insertion.
  • To incorporate sensorless haptic feedback and 5-DOF surgical manipulation.
  • To minimize radiation exposure, reduce operating time, and improve surgical outcomes.

Main Methods:

  • A robot-assisted system with sensorless haptic feedback was developed.
  • The system was tested in preliminary cadaveric experiments at the L4-L5 lumbar spine level.
  • Both percutaneous and open pedicle screw insertions were performed and validated.

Main Results:

  • Successful placement of percutaneous and open pedicle screws was achieved.
  • Average position errors were 0.011 radians (percutaneous) and 0.0116 radians (open).
  • Average torque errors were 0.054 Nm (percutaneous) and 0.0057 Nm (open).

Conclusions:

  • The sensorless haptic feedback in robot-assisted systems shows potential for enhanced precision in spinal surgery.
  • This technology can significantly reduce radiation exposure during pedicle screw insertion.
  • The findings represent a significant advancement in spinal surgery technology, improving safety and outcomes.