The markerless tracking algorithm aims to improve the usability and the interaction of this system, avoiding the use of markers and ensuring a more realistic positioning of the virtual arm in place of the injured real arm. The results of the prototype were feasible because, even with the error in the step of removing the arm real image, it was possible to detect and to properly position an virtual 3D arm, no dependency of the fiducial markers or objects that hinder the overall usability of the system. Future work will include improving the module of removal of the real arm, using information from the edges to rebuild the background, rather than just paint it with the background color. Research