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A Teleoperated Robotic System-Assisted Percutaneous Transiliac-Transsacral Screw Fixation Technique
Published on: January 6, 2023
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Pedicle axis view combined by sacral mapping can decrease fluoroscopic shot count in percutaneous iliosacral screw
Injury
|December 3, 2014
Summary
A new technique using sacral mapping and a 30°–30° view significantly reduces radiation exposure during percutaneous iliosacral screw fixation. This method decreases fluoroscopic shots, radiation time, and overall radiation dose for posterior pelvic ring disruptions.
Area of Science:
- Orthopedic surgery
- Radiology
- Medical imaging
Background:
- Percutaneous iliosacral screw fixation for posterior pelvic ring disruptions involves significant radiation exposure.
- Conventional C-arm imaging uses inlet, outlet, and lateral views.
- A novel projection and mapping technique may improve visualization and reduce radiation.
Purpose of the Study:
- To evaluate a new methodology for percutaneous iliosacral screw fixation.
- To determine if radiation exposure can be decreased using the new technique.
Main Methods:
- Seventeen patients with posterior pelvic ring disruptions were studied.
- Group 1 (7 patients) used conventional projections.
- Group 2 (10 patients) used a 30°–30° projection with sacral mapping via K-wires.
- Radiation exposure time, fluoroscopic shots, and radiation dose were compared.
Main Results:
- Group 2 showed a statistically significant reduction in fluoroscopic images for guide wire and screw placement (29.5 vs. 132).
- Total fluoroscopic radiation time was significantly lower in Group 2 (52 s vs. 138 s).
- Group 2 had a significantly lower median radiation dose (1192 vs. 3020 units).
Conclusions:
- Sacral mapping and the 30°–30° view markedly reduce fluoroscopic shots, radiation time, and dose.
- This improved methodology enhances safety during iliosacral screw placement.
- The technique is effective for treating posterior pelvic ring disruptions.
