Body part position determining device using navigation system and marker on body part, determines position of fixed structure relative to navigation system using data from position-determining device

摘要

The marker (7,8) is connected to a positioning determining device(17) which determines the position of a fixed structure (4,6) of the body part (1,2) relative to the marker, and feeds the corresponding data to the navigation system (13). The navigation system uses these data and the position data of the marker relative to the navigation system to determine the position of the fixed structure relative to the navigation system.