Purpose <p>To assess the feasibility of a new technique for antegrade insertion of LC-II screws, guided solely by the obturator-outlet view.</p> Methods <p>From September 2020 to September 2025, patients with pelvic and/or acetabular fractures involving disruption of the supra-acetabular corridor treated with antegrade insertion of a LC-II screw in our hospital were included in this study. The procedure of LC-II screw insertion was performed solely guided by the obturator-outlet view, referencing with two anatomical points, namely the anterior inferior iliac spine and a virtual anatomical point. Postoperative CT scans were carried out to assess whether the LC-II screws were placed correctly within the bony corridor. Peri- and postoperative complications were documented.</p> Results <p>Thirty-seven long, large-diameter (≥ 7 mm) LC-II screws were inserted in a total of 20 consecutive patients. The average length of these 37 screws was 115.8&#xa0;mm. The procedure was performed without any noted wound infections or related vascular, neurological, and visceral complications. Postoperative CT images confirmed that all 37 LC-II screws were correctly placed within the bony corridors, with no instances of screw penetration. All patients were followed up for an average of 19.1 months (range, 6.1- 37 months). No cases of screw loosening, breakage, or bone union failure were observed.</p> Conclusions <p>The technique for antegrade insertion of LC-II screws, guided solely by the obturator-outlet view is a feasible surgical procedure. The virtual anatomical point has been shown to be a reliable anatomical landmark in our surgical procedure.</p>

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Feasibility study of antegrade insertion of lateral compression type-II screws guided solely by the combined obturator-oblique outlet view

  • Libin Zheng,
  • Jiangtao Hao,
  • Xiaokang Huang,
  • Lai Yu,
  • Guanfei Zeng,
  • Chia-Jui Hu,
  • Guangming Yang,
  • Yongwei Pan

摘要

Purpose

To assess the feasibility of a new technique for antegrade insertion of LC-II screws, guided solely by the obturator-outlet view.

Methods

From September 2020 to September 2025, patients with pelvic and/or acetabular fractures involving disruption of the supra-acetabular corridor treated with antegrade insertion of a LC-II screw in our hospital were included in this study. The procedure of LC-II screw insertion was performed solely guided by the obturator-outlet view, referencing with two anatomical points, namely the anterior inferior iliac spine and a virtual anatomical point. Postoperative CT scans were carried out to assess whether the LC-II screws were placed correctly within the bony corridor. Peri- and postoperative complications were documented.

Results

Thirty-seven long, large-diameter (≥ 7 mm) LC-II screws were inserted in a total of 20 consecutive patients. The average length of these 37 screws was 115.8 mm. The procedure was performed without any noted wound infections or related vascular, neurological, and visceral complications. Postoperative CT images confirmed that all 37 LC-II screws were correctly placed within the bony corridors, with no instances of screw penetration. All patients were followed up for an average of 19.1 months (range, 6.1- 37 months). No cases of screw loosening, breakage, or bone union failure were observed.

Conclusions

The technique for antegrade insertion of LC-II screws, guided solely by the obturator-outlet view is a feasible surgical procedure. The virtual anatomical point has been shown to be a reliable anatomical landmark in our surgical procedure.