Medical College of Wisconsin, Milwaukee, WI, USA.
Medical College of Wisconsin, Milwaukee, WI, USA.
Accid Anal Prev. 2023 Dec;193:107329. doi: 10.1016/j.aap.2023.107329. Epub 2023 Oct 1.
The purpose of the study was to determine the bone mineral densities (BMDs) of the C1 and C2 vertebrae and discuss their implications for autonomous vehicle environments and vulnerable road users. Using quantitated computed tomography (QCT), the BMDs were obtained at eight regions for the C1 vertebra and seven regions for the C2 vertebra. The spine surgeon author outlined the boundaries of each region, and nine elderly female human cadaver specimens were used. The regions were based on potential stabilization locations for fracture fixation. In the C1 vertebra, the BMD was greatest at the anterior tubercle, followed by the posterior tubercle, the posterior arch, and the lateral and anterior lateral masses. In the C2 vertebra, the distal odontoid had the greatest BMD, followed by the spinous process, the C2-lateral mass, the odontoid-body interface, and the anterior inferior aspect of the body. Use of these data in female-specific finite element models may lead to a better understanding of load paths, injuries, mechanisms, and tolerance.
本研究旨在确定 C1 和 C2 椎体的骨矿物质密度（BMD），并讨论其对自动驾驶环境和弱势道路使用者的意义。使用定量计算机断层扫描（QCT），在 C1 椎体的八个区域和 C2 椎体的七个区域获得 BMD。脊柱外科医生作者勾勒出每个区域的边界，并使用了九个老年女性人体尸体标本。这些区域基于骨折固定的潜在稳定位置。在 C1 椎体中，BMD 在前结节处最大，其次是后结节、后弓、侧部和前外侧部。在 C2 椎体中，远侧齿突的 BMD 最大，其次是棘突、C2-外侧部、齿突-体界面和体的前下部分。在女性特定的有限元模型中使用这些数据可能会更好地理解载荷路径、损伤、机制和耐受度。
