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Updated: Jan 24, 2026
05:57
A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique
Published on: January 6, 2023
3.6K
Percutaneous modified iliac screw fixation: technique and clinical experience
Soo Hyun Lee1, Chun Kee Chung2, Do Heum Yoon1
1Department of Neurosurgery, College of Medicine, CHA Bundang Medical Center, CHA University, 59, Yatap-Ro, Bundang-Gu, Seongnam, 13496, Republic of Korea.
Acta Neurochirurgica
|January 22, 2026
Summary
The percutaneous modified iliac screw (PMIS) technique offers a safe, minimally invasive approach for sacropelvic fixation. This method avoids complications associated with other techniques, showing promising early results.
Area of Science:
- Spine surgery
- Orthopedic surgery
- Minimally invasive techniques
Background:
- S1 pedicle screws have high rates of loosening and breakage.
- Conventional iliac screw (CIS) and S2 alar-iliac (S2AI) techniques offer improved stability but have limitations.
- A less invasive technique is needed for sacropelvic fixation.
Purpose of the Study:
- To evaluate the safety and efficacy of the percutaneous modified iliac screw (PMIS) technique for sacropelvic fixation.
- To compare PMIS with conventional methods like CIS and S2AI.
- To assess the feasibility of PMIS in a minimally invasive approach.
Main Methods:
- Retrospective case series of 10 patients (2 males, 8 females; mean age 59.9 years) undergoing PMIS.
- Utilized virtual fluoroscopic reference lines for safe screw insertion into the intra-iliac cancellous corridor.
- Evaluated pre- and post-operative spinopelvic parameters (PI, PT, SS) and complications via radiographs.
Main Results:
- No infections, screw prominence, or screw-related complications were observed.
- One revision was required due to unrelated spinal infection progression.
- Spinopelvic parameters (PI, PT, SS) remained stable from pre-operation to final follow-up.
Conclusions:
- The PMIS technique is a safe and minimally invasive option for sacropelvic fixation.
- PMIS overcomes limitations of CIS and S2AI while minimizing soft tissue dissection.
- Further research with larger cohorts is recommended to confirm PMIS effectiveness and clinical utility.
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