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Anatomical Study of Lateral Compression II Screw Path and Entry Parameters Based on Three-Dimensional CT Image
Xingye Du1, Yong Liu1, Xuefeng Jiang1
1Department of Orthopedics, Affiliated Jiangyin Hospital of Nantong University, Jiangyin, China.
Orthopaedic Surgery
|March 18, 2025
Summary
This study analyzed the ideal screw path for Lateral Compression II pelvic fractures using 3D models. Findings reveal significant sex-based anatomical differences, crucial for safe screw placement.
Area of Science:
- Orthopedic surgery
- Medical imaging
- Anatomy
Background:
- Lateral compression II (LC-II) fractures are common pelvic injuries requiring surgical fixation.
- Current fixation methods lack precise anatomical guidance, increasing surgical risks.
- Digital analysis of screw paths can improve precision and safety.
Purpose of the Study:
- To analyze the screw path and entry parameters for LC-II fractures using digital medical software.
- To provide precise anatomical references for percutaneous screw insertion.
- To identify sex-based differences in pelvic anatomy relevant to screw placement.
Main Methods:
- Retrospective analysis of 43 adult patients (21 males, 22 females) with CT scans.
- Reconstruction of digital 3D pelvic models.
- Design of ideal LC-II screw paths using cross-section method and analysis of parameters like length, diameter, bone thickness, and entry angles.
Main Results:
- Successful screw path construction in 42 of 43 patients.
- Significant sex-based differences in screw path length, diameter, bone thickness, and entry angles.
- LC-II screw entry points located posterior to the AIIS, with specific angles to coronal and sagittal planes differing between sexes.
Conclusions:
- Digital 3D modeling provides essential anatomical evidence for LC-II screw insertion.
- Sex-based anatomical differences necessitate individualized preoperative planning.
- Precise, safe percutaneous insertion of LC-II screws is achievable with detailed anatomical guidance.
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