1. A method for producing a model of bone geometry of a volumetric region of a body, the method comprising the steps of: a) scanning the volumetric region using ultrasound and acquiring geometric data associated with bones within the volumetric region; b) identifying points from the acquired data that are derived from a surface of the bones; c) organizing the points into separate bone entities representing the bones of the volumetric region; and d) transforming the points so as to position the bone entities in accordance with a normalized template.