Patent ID: 8057407

Claim:
A method of determining a position of a plurality of portions of an anatomy, wherein the plurality of portions of the anatomy are naturally a single portion, comprising: attaching a first tracking sensor to a first portion of the anatomy including moving a first anchor into a first bone portion of the anatomy, interconnecting the first tracking sensor and the first anchor in a selected orientation, and fixing the first tracking sensor to the first anchor, wherein interconnecting the first tracking sensor and the first anchor in a selected orientation includes connecting the first tracking sensor to the first anchor in substantially only a single orientation determined by a first hollow formed relative to the first anchor; attaching a second tracking sensor to a second portion of the anatomy including moving a second anchor into a second bone portion of the anatomy; and moving the first portion of the anatomy relative to the second portion of the anatomy; wherein a selected position of the first portion and the second portion is determined at least in part with a first position signal produced from the first tracking sensor and a second position signal produced from the second tracking sensor.