Data for paper "An image-based kinematic model of the tibiotalar and subtalar joints and its application to gait analysis in children with Juvenile Idiopathic Arthritis"

This deposit contains data for reproducing the results reported in the paper "An image-based kinematic model of the tibiotalar and subtalar joints and its application to gait analysis in children with Juvenile Idiopathic Arthritis".The folder "Repeatability Study" contains two sub folders:1. "Fitting3x3" with data relative to three subjects (P1,P2,P3). For each subject, the foot bone geometries are in "Geometries"; the surfaces used for fitting and the output of fitting are in "Fitting results", where nine repetitions are available (3x3operators).NB1: the surface called talonavicular.stl was selected onto the proximal surface of the navicular bone instead of the distal talus surface as described in the paper methodology. This choice was dictated by the impossibility of selecting correctly the talar surface on some of the segmented geometries, due to poor quality. However, testing the two approaches on a subset of subjects, proved equivalent results when building the joint axis from one or the other surface. NB2: the file Fitted_geometries.txt contains a list of points output from the fitting in Matlab and useful to build the joint reference systems. The point X_cylinder is only randomly assigned at this stage and needs to be relocated in NMSBuilder environment according to the instructions desctibed in the modelling Guide.2. "RepeatabilityKinematicsP3" containing "Inputdata" for the subject with worst repeatability results with trc files for a standing and a walking trial; "OpemsimModels3x3" with nine repetitions (3x3operators) of the opensim model of that subject.The folder "Models for analysis" contains forty sub folders, relative to the two limbs of the twenty enrolled subjects. Each folder contains the opensim model of the foot and ankle and a sub folder with the full lower limb model, geometries, trc data, and results of IK simulations in opernsim.

本数据集收录了用以复现论文《基于图像的胫距关节和距骨关节的运动学模型及其在青少年特发性关节炎儿童步态分析中的应用》所述结果的所需数据。其中，“可重复性研究”文件夹包含两个子文件夹：1. “Fitting3x3”，包含与三位受试者（P1、P2、P3）相关的数据。对于每位受试者，足骨的几何形状位于“几何形状”子文件夹中；用于拟合的表面及拟合结果位于“拟合结果”子文件夹中，其中包含九次重复实验数据（3x3操作符）。注意一：与论文所述方法学不同，本实验选择了名为talonavicular.stl的表面，将其置于距骨近端表面而非远端跟骨表面，此选择源于部分分割几何形状中难以正确选择跟骨表面的困难。然而，对部分受试者进行两种方法的测试，证明了从任一表面构建关节轴线时均能获得等效的结果。注意二：Fitted_geometries.txt文件包含由Matlab拟合输出的点列表，这些点对于构建关节参考系统十分有用。点X_cylinder在此阶段仅随机分配，需根据建模指南中描述的说明在NMSBuilder环境中重新定位。2. “RepeatabilityKinematicsP3”，包含重复性最差的受试者的“输入数据”以及站立和行走试验的trc文件；“OpemsimModels3x3”包含该受试者的opensim模型的九次重复（3x3操作符）。“分析模型”文件夹包含四十个子文件夹，分别对应二十位受试者的双下肢。每个文件夹包含足踝的opensim模型以及一个包含完整下肢模型、几何形状、trc数据和opernsim中逆向运动学模拟结果的子文件夹。