Aspects of the present disclosure relate to systems, devices and methods for performing a surgical step or surgical procedure with
visual guidance using an optical head mounted display. Aspects of the present disclosure relate to systems, devices and methods for displaying, placing, fitting,
sizing, selecting, aligning, moving a virtual
implant on a physical anatomic structure of a patient and, optionally, modifying or changing the displaying, placing, fitting,
sizing, selecting, aligning, moving, for example based on kinematic information.