Date of download: 11/2/2017 Copyright © ASME. All rights reserved. From: Theoretical Accuracy of Model-Based Shape Matching for Measuring Natural Knee Kinematics with Single-Plane Fluoroscopy J Biomech Eng. 2005;127(4):692-699. doi:10.1115/1.1933949 Figure Legend: Synthetic fluoroscopic image creation process to simulate an in vivo stair rise motion. (a) Sample experimental fluoroscopic image. (b) Femur, tibia/fibula, and patella bone models manually matched to the experimental image. (c) Corresponding synthetic fluoroscopic image generated by ray tracing the cortical bone models in their manually matched poses. (d) Femur, tibia/fibula, and patella bone models automatically matched to the synthetic image to evaluate the accuracy of the recovered pose parameters.