1. A surgical navigation system for use in a surgical procedure on an anatomy including a bone, comprising: a tracking system operable to track a tracking sensor; a surgical instrument operable to be tracked by said tracking system; a dynamic reference frame having the tracking sensor; and a dynamic reference frame positioning member extending along an axis from a first end to a second end; wherein said first end forms a one piece bone engaging portion having a first portion and a second portion extending at a fixed angle relative to one another; wherein the tracking sensor is tracked by the tracking system; wherein the dynamic reference frame positioning member is operable and configured to engage a bone in the anatomy and be axially impacted along the axis of the dynamic reference frame positioning member into the bone in a selectively fixed manner to hold said dynamic reference frame at a selected position; and wherein the tracking system is configured to correlate the surgical instrument relative to the dynamic reference frame.