改良骶髂螺钉的三维数字化解剖测量。
Three-dimensional digital anatomical measurement of modified sacroiliac screws.
机构信息
Department of Traumatic Orthopaedics, Shandong Provincial Hospital, Cheeloo College of Medicine, Shandong University, 324 Jing Wu Road, Jinan, 250012, Shandong, China.
Department of Orthopaedics, People's Hospital of Zouping City, Binzhou, Shandong, China.
出版信息
J Orthop Surg Res. 2022 Mar 4;17(1):136. doi: 10.1186/s13018-022-03018-3.
PURPOSE
To rebuild a model of the pelvis and effectively simulate the trajectory of modified sacroiliac screws, we measured the parameters of each screw and screw channel and assessed the safety and feasibility of the parameters in adults.
METHOD AND MATERIALS
One hundred (50 males and 50 females) normal adult pelvic computed tomography (CT) images were randomly selected and imported into Mimics software to rebuild the three-dimensional pelvis model. In these models, each ideal channel of modified screws was simulated, and then we obtained the precise parameters of screws and channels using Mimics and Three-matic software.
RESULTS
The results of the comparison (right vs. left) showed that there were no significant differences in any of the angles, radius or M1SI parameters (the first modified sacroiliac). However, one parameter (BS) of M2SI (the second modified sacroiliac), two parameters (AP and BS) of M3SI (the third modified sacroiliac), and three parameters (AP, BS, L) of M4SI (the fourth modified sacroiliac) were statistically significant (P < 0.05). The result of comparison (between genders) showed that there were no significant differences in M1SI and M2SI; in contrast, the radius, length and the α angle of M3SI and M4SI were significantly different between genders (P < 0.05), and the radius of M4SI required special attention. If the radius of the limiting screw channel was > 3.50 mm, 52 cases (52%, 24 males and 28 females) could not complete the M4SI screw placement among 100 samples. If the radius of the limiting screw channel was > 3.0 mm, a total of 10 cases (10%, 2 males and 8 females) could not complete the M4SI screw placement.
CONCLUSION
Through the measurement of 100 healthy adult real three-dimensional pelvic models, we obtained the parameters of each modified sacroiliac screw and measured the three angles of each screw based on international coordinates for the first time, which can instruct clinical application.
目的
重建骨盆模型并有效模拟改良骶髂螺钉的轨迹，我们测量了每个螺钉和螺钉通道的参数，并评估了这些参数在成人中的安全性和可行性。
方法与材料
随机选取 100 例（男 50 例，女 50 例）正常成人骨盆 CT 图像并导入 Mimics 软件重建三维骨盆模型。在这些模型中，模拟了每个改良螺钉的理想通道，然后使用 Mimics 和 Three-matic 软件获得螺钉和通道的精确参数。
结果
左右对比结果显示，第一、二、三改良骶髂螺钉的所有角度、半径或 M1SI 参数（第一改良骶髂螺钉）均无显著差异。然而，第二改良骶髂螺钉的 M2SI 中的一个参数（BS）、第三改良骶髂螺钉的 M3SI 的两个参数（AP 和 BS）以及第四改良骶髂螺钉的 M4SI 的三个参数（AP、BS、L）有统计学意义（P<0.05）。性别对比结果显示，M1SI 和 M2SI 无显著差异；相比之下，M3SI 和 M4SI 的半径、长度和α角在性别之间有显著差异（P<0.05），M4SI 的半径需要特别注意。如果限制螺钉通道的半径>3.50mm，则在 100 个样本中，52 例（52%，男 24 例，女 28 例）无法完成 M4SI 螺钉放置。如果限制螺钉通道的半径>3.0mm，则共有 10 例（10%，男 2 例，女 8 例）无法完成 M4SI 螺钉放置。
结论
通过对 100 例健康成人真实三维骨盆模型的测量，我们获得了每个改良骶髂螺钉的参数，并首次基于国际坐标测量了每个螺钉的三个角度，这可以为临床应用提供指导。
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