16807 thoracolumbar osteo-ligamentous spine virtual FE input files (part-16: model 15295 to 16295)

16807 thoracolumbar osteo-ligamentous spine virtual FE input files (part-16: model 15295 to 16295)

16807 FE input files representing thoracolumbar spine hexahedral models, including point coordinates. To reduce the size of shared virtual finite element (FE) models, only point coordinates are shared here. The mean FE input file "Mean_Model (Template).inp" is also shared, which includes point coordinates, mesh connectivity IDs, and element sets. To generate virtual FE input files for any of the 16807 models, the corresponding shared point coordinates can be replaced into the mean FE input file (Mean_Model (Template).inp). Mesh connectivity IDs, and element sets are the same in all of FE input files. Mean FE input file includes vertebras and IVDs hexahedral meshes; pelvis, sacrum, and the femoral head triangulated meshes; and ligaments. Each point coordinate file is almost 39MB.

An excel file: "Descriptive_List (16807_FE_virtual_models).xlsx" reporting measured spinopelvic parameters for 16807 virtual FE hexahedral models. The Excel file includes measured spinopelvic parameters (PI, PT, SS, LL, LL-PI, GT, RPV, RLL, LDI, RSA, TPA, and scoliosis cobb angle), GAP and IVD centric thickness for FE virtual cohort. Model ID in the excel file is correspondent to the model’s name.

One video file: "how_to_replace_point_coordinates.mp4". It shows how you can replace point coordinates here to the mean FE input file "Mean_Model (Template).inp" in order to generate specific FE input file.

Notes:

1- Model number in "Descriptive_List (16807_FE_virtual_models).xlsx" is correspondent to the same model number in the 16807 stereolithography (stl) files (.stl extension) representing the virtual thoracolumbar spine triangulated meshes (DOI: 10.5281/zenodo.7715658; stl.part01.rar to stl.part09.rar).

2-These point coordinates are sampled by combining the first 5 shape modes of the morphed-mesh statistical shape model in which each shape mode is discretized into 7 standard deviations: -3, -2, -1, 0, 1, 2, 3.

3- Generated FE inp files can be opened by Abaqus 2019 and later. Any other FE software which supports .inp extension also can open the files.

Developed by: Morteza Rasouligandomani (Ph.D. student in biomedical engineering, Pompeu Fabra university, BCN Med-Tech group, DTIC department, Barcelona, Spain).

Email contact: [e-mail]

16807个胸腰椎骨韧带脊柱虚拟有限元（Finite Element, FE）输入文件（第16部分：模型15295至16295）

16807个代表胸腰椎脊柱六面体模型的有限元输入文件，内含节点坐标。为缩减共享虚拟有限元模型的体积，本次仅共享节点坐标文件。本次同时共享平均有限元输入文件「Mean_Model (Template).inp」，该文件包含节点坐标、网格连接ID以及单元集合。若需生成16807个模型中任意一个的虚拟有限元输入文件，仅需将对应共享节点坐标替换至该平均有限元输入文件（「Mean_Model (Template).inp」）即可。所有有限元输入文件的网格连接ID与单元集合均保持一致。平均有限元输入文件包含椎体与椎间盘（Intervertebral Disc, IVD）六面体网格、骨盆、骶骨及股骨头三角网格，以及韧带结构。单个节点坐标文件大小约为39MB。

配套包含一份Excel文件「Descriptive_List (16807_FE_virtual_models).xlsx」，记录了16807个虚拟有限元六面体模型的实测脊柱骨盆参数。该文件涵盖的实测参数包括：骨盆入射角（Pelvic Incidence, PI）、骨盆倾斜角（Pelvic Tilt, PT）、骶骨倾斜角（Sacral Slope, SS）、腰椎前凸角（Lumbar Lordosis, LL）、LL-PI差值、GT、RPV、RLL、LDI、RSA、TPA及脊柱侧凸Cobb角，同时包含有限元虚拟队列的间隙参数与椎间盘中心厚度。Excel文件中的模型ID与对应模型的名称一一对应。

另有一则视频文件「how_to_replace_point_coordinates.mp4」，演示了如何将本数据集的节点坐标替换至平均有限元输入文件「Mean_Model (Template).inp」，以生成特定的有限元输入文件。

Notes:

1. 「Descriptive_List (16807_FE_virtual_models).xlsx」中的模型编号，与代表虚拟胸腰椎脊柱三角网格的16807个立体光刻（Stereolithography, STL）文件（后缀为.stl，DOI：10.5281/zenodo.7715658；压缩包为stl.part01.rar至stl.part09.rar）中的模型编号完全一致。

2. 本数据集的节点坐标通过结合变形网格统计形状模型的前5个形状模式采样得到，每个形状模式被离散为7个标准差档位：-3、-2、-1、0、1、2、3。

3. 生成的有限元inp文件可使用Abaqus 2019及更高版本打开，任何支持.inp格式的其他有限元软件均可读取该类文件。

数据集开发者：Morteza Rasouligandomani（西班牙巴塞罗那庞培法布拉大学生物医学工程博士生，BCN Med-Tech课题组、DTIC系）

联系邮箱：[e-mail]