The Knee centre
The initial center of rotation was determined by a study carried out at the Scientific Fabrication Laboratory (SciFabLab) of the International Centre for Theoretical Physics of Miramare (Trieste - Italy) using the three-dimensional manipulation and verifying the procedure graph / math set, by creating a model of the knee with real 3D Printing (http://scifablab.ictp.it/category/guest-projects/ricerca-del-centro-iniziale-di-rotazione-del-ginocchio/).