Tracing platforms and intra-operative systems and methods using same

A system, for intra-operative use during a surgical procedure, comprising:

• a tracing platform configured to rigidly attach to an anatomy of a patient and having at least one surface configured to provide a defined path for tracing by a surgical instrument;
• and
• an intra-operative computing unit configured to:
• obtain path definition data related to the defined path;
• receive first pose data at a first instance of time from a tracking system related to the surgical instrument tracing the defined path and first landmark pose data corresponding to a landmark of the anatomy;
• calculate a first location of the defined path using the first pose data, the first landmark pose data and the path definition data;
• receive second pose data at a second instance of time from a tracking system related to the surgical instrument tracing the defined path and second landmark pose data corresponding to the landmark of the anatomy;
• calculate a second location of the defined path using the second pose data, the second landmark pose data and the path definition data;
• receive additional pose data corresponding to a joint of the anatomy;
• calculate a parameter using a change in the first location of the defined path and the second location of the defined path, and additional pose data;
• and
• provide the parameter for display to a display unit;
• wherein the anatomy is a femur, the first instance of time is prior to a positioning of an implant, the second instance of time is after the positioning of the implant and the parameter is a change in leg length.

A system, for intra-operative use during a surgical procedure, comprising:

• a tracing platform configured to rigidly attach to an anatomy of a patient and having at least one surface configured to provide a defined path for tracing by a surgical instrument;
• and
• an intra-operative computing unit configured to:
• obtain path definition data related to the defined path;
• receive first pose data at a first instance of time from a tracking system related to the surgical instrument tracing the defined path and first landmark pose data corresponding to a landmark of the anatomy;
• calculate a first location of the defined path using the first pose data, the first landmark pose data and the path definition data;
• receive second pose data at a second instance of time from a tracking system related to the surgical instrument tracing the defined path and second landmark pose data corresponding to the landmark of the anatomy;
• calculate a second location of the defined path using the second pose data, the second landmark pose data and the path definition data;
• receive additional pose data corresponding to a joint of the anatomy;
• calculate a parameter using a change in the first location of the defined path and the second location of the defined path, and additional pose data;
• and
• provide the parameter for display to a display unit;
• wherein the anatomy is a femur, the first instance of time is prior to a positioning of an implant, the second instance of time is after the positioning of the implant and the parameter is a change in leg offset.

A computer-implemented method for intra-operative use during a surgical procedure by an intra-operative computing unit comprising at least one processing unit, the method comprising the steps of:

• obtaining, by the at least one processing unit, path definition data related to a trace of a defined path on at least one surface of a tracing platform, the tracing platform configured to rigidly attach to an anatomy of a patient;
• receiving, by the at least one processing unit, first pose data at a first instance of time from a tracking system related to a surgical instrument tracing the defined path and first landmark pose data corresponding to a landmark of the anatomy;
• calculating, by the at least one processing unit, a first location of the defined path using the first pose data, first landmark pose data corresponding to a landmark of the anatomy and the path definition data;
• receiving, by the at least one processing unit, second pose data at a second instance of time from a tracking system related to the surgical instrument tracing the defined path and second landmark pose data corresponding to the landmark of the anatomy;
• calculating, by the at least one processing unit, a second location of the defined path using the second pose data, the second landmark pose data and the path definition data;
• receiving, by the at least one processing unit, additional pose data comprising pose data corresponding to a center of rotation of a joint of the anatomy;
• calculating, by the at least one processing unit, a parameter using a change in the first location of the defined path and the second location of the defined path, and the additional pose data;
• providing, by the at least one processing unit, the parameter for display to a display unit;
• and
• presenting workflow, by the at least one processing unit, via a display to guide a user to generate the first pose data at the first instance of time and to generate the second pose data at the second instance of time in association with steps of the surgical procedure.