Figure 1
From: Dependence of model-based RSA accuracy on higher and lower implant surface model quality
Reference RSA radiograph. A) Migration is represented with respect to a global fiducial coordinate system defined relative to the calibration box translation along the medio-lateral (x-axis, red) and superior-inferior (y-axis, blue) axes constitute in-plane motion, and translation about the posterior-anterior-axis (z-axis, green) out-of-plane motion; rotation about the posterior-anterior-axis (Rz-axis, green) further described in-plane motion, and about the medio-lateral (Rx-axis, red) and superior-inferior axes (Ry-axis, blue), out-of-plane motion respectively. B) The applied implant phantom-model enables the simulation of implant migration. This migration simulation was enabled by the micromanipulators integrated within the phantom model. The imposed set-point motion within the measurement protocol was 1.0 mm for translation about each axis, as well as 1.31 deg for out-of-plane (x-, y-axis) and 1.19 deg for in-plane (z-axis) rotational motion.