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A Spine Robotic-Assisted Navigation System for Pedicle Screw Placement
Published on: May 11, 2020
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Risk Factors of Unsatisfactory Robot-Assisted Pedicle Screw Placement: A Case-Control Study
Qi Zhang1,2, Ming-Xing Fan1,2, Xiao-Guang Han1,2
1Department of Spine Surgery, Beijing Jishuitan Hospital, Beijing, China.
Neurospine
|January 9, 2022
Summary
Robot-assisted pedicle screw fixation has a 6.92% unsatisfactory screw position rate. Severe obesity, osteoporosis, and tracker distance increase malposition risk, requiring surgical vigilance.
Area of Science:
- Spine Surgery
- Robotics in Medicine
- Orthopedic Surgery
Background:
- Robot-assisted pedicle screw fixation offers precision but can have positioning challenges.
- Identifying risk factors for unsatisfactory screw placement is crucial for improving outcomes.
Purpose of the Study:
- To identify patient and surgical factors associated with unsatisfactory screw positioning in robot-assisted pedicle screw fixation.
Main Methods:
- Retrospective analysis of 780 pedicle screws from 163 robot-assisted surgeries.
- Univariate and logistic regression analyses were used to identify risk factors for malposition.
Main Results:
- The overall unsatisfactory screw position rate was 6.92%.
- Severe obesity (BMI ≥ 30 kg/m2), osteoporosis (T ≤ -2.5), and segments 3 levels from the tracker were significant risk factors for malposition.
Conclusions:
- Surgeons should exercise increased caution during robot-assisted pedicle screw placement in patients with severe obesity and osteoporosis.
- Maintaining optimal tracker proximity is essential to minimize malposition risk.
