Accuracy of S2 Alar-Iliac Screw Placement Under the Guidance of a 3D-Printed Surgical Guide Template
| Autor: | Yonghui Zhao, Yongqing Xu, Haotian Luo, Jinlong Liang, Sheng Lu, Yulong Ma, Gonghai Han |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Male Sacrum 3d printed Bone Screws Screw placement Ilium 03 medical and health sciences Imaging Three-Dimensional 0302 clinical medicine First posterior sacral foramen Humans Medicine Retrospective Studies business.industry Vertical distance Lower edge Median sacral crest Middle Aged Sagittal plane Spinal Fusion medicine.anatomical_structure Surgery Computer-Assisted 030220 oncology & carcinogenesis Iliac screw Printing Three-Dimensional Female Surgery Neurology (clinical) business Nuclear medicine 030217 neurology & neurosurgery |
| Zdroj: | World Neurosurgery. 146:e161-e167 |
| ISSN: | 1878-8750 |
| DOI: | 10.1016/j.wneu.2020.10.063 |
| Popis: | Objective To evaluate the safety and accuracy of S2 alar-iliac (S2AI) screw placement guided by a three-dimensional (3D)-printed surgical guide template. Methods The data of 27 patients treated with S2AI screws were analyzed. S2AI surgical guide templates were designed and printed, and S2AI screw placement was completed intraoperatively with the guide templates. Postoperative computed tomography (CT) was performed to measure screw path parameters, namely, the sagittal angle (SA), the transverse angle (TA), the horizontal distance (HD) between the entry point of the screw and the median sacral crest, and the vertical distance (VD) between the entry point of the screw and the lower edge of the first posterior sacral foramen. Screw placement was graded according to the Oh grading criteria. Results A total of 54 S2AI screws were placed. The screw grades were as follows: 52 screws were considered grade 0, two were grade 1, none were grade 2, and none were grade 3. Thus, grade 0 accounted for 96.3% of the screws. When the preoperatively planned SA (32.3° ± 2.0°), TA (42.1° ± 3.9°), HD (5.1 ± 1.1) mm, and VD (19.0 ± 2.4) mm were compared with the corresponding postoperative SA (31.9° ± 3.8°), TA (42.5° ± 4.0°), HD (4.9 ± 1.1) mm, and VD (19.1 ± 2.3) mm, no significant differences were identified (P > 0.05). Conclusions S2AI screw placement assisted by a 3D-printed surgical guide is safe and accurate. |
| Databáze: | OpenAIRE |
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