Shape sensing for orthopedic navigation

An optical shape sensing system, comprising:

• a shape sensing module configured to receive feedback from one or more optical shape sensing fibers;
• one or more attachment devices connected at an anatomical position relative to one or more bones, each attachment device being connected to an optical shape sensing fiber, the optical shape sensing fiber being employed to positionally and orientationally track the anatomical position in a model coordinate system;
• and
• an anatomical image included in the model coordinate system wherein tracked changes from the optical shape sensing fiber are employed to update the anatomical image viewed on a display.

A method for tracking a bone using an optical shape sensing system, comprising:

• connecting an attachment device to a location relative to a bone;
• identifying a position and orientation of the attachment device using an optical shape sensing fiber connected to the attachment device;
• registering the position of the attachment device relative to an anatomical map using feedback from the optical shape sensing fiber;
• and
• displaying positional and orientational changes of the bone with the anatomical map.