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September 14, 2026International Journal of Medical Robotics and Computer Assisted Surgery

An Optical Tracking‐Based Robot‐Assisted System for Spinal Fixation Rod Bending

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Authors

WZWeijun ZhangYHYaohui HuangXLXingye Li

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Overview

Comparative evaluation demonstrates improved rod-contouring accuracy and shorter operative times in patients undergoing spinal fixation, suggesting enhanced feasibility for automated surgery.

Key Points

  • To develop and evaluate an optical tracking-based robot-assisted system that automates the acquisition, planning, and bending of spinal fixation rods.
  • Designed a robotic bending system integrating an optical tracking acquisition unit, planning software to discretize target curves into bending steps, and a mechanical actuator.
  • Evaluated system accuracy and efficiency across five in vitro trials, five assisted-versus-manual comparisons, and 20 paired clinical cases.
  • Planned rods showed strong consistency with target curves, maintaining mean angle, axial rotation, and length errors within clinically acceptable limits.
  • Robot-assisted rod bending reduced placement errors compared with manual bending and achieved shorter operative times on the assisted side in clinical testing.

Cite This Study

Zhang et al. (2026) studied this question.

synapsesocial.com/papers/6aa7b3bf0926e14a848b2ed1https://doi.org/10.1002/rcs.70233
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