Methods and apparatuses for providing a reference array input device for
use with a computer-aided surgical navigation system. A reference array
input device according to an embodiment of the present invention is
configured to provide a plurality of fiducial members comprising portions
capable of being sensed by at least two sensors associated with the
computer-aided surgical navigation system in order to determine position
and orientation of the reference array input device by the system. The
reference array input device can include a plurality of indicator
detectors adapted to facilitate selection of a corresponding instruction
associated with the computer-aided surgical navigation system. The
reference array input device can also include a mount adapted to support
the reference array input device adjacent to an object, a surgical
instrument, or a joint replacement prosthesis.