Orthopaedic navigation system

A kit for use in providing information as to the position of a prosthesis compared to a desired position of the prosthesis, comprising:

• (a) a prosthesis comprising a first sensor to transmit a prosthesis position signal;
• (b) a second sensor for connection to a body to transmit a reference position signal;
• (c) a trial prosthesis having a third sensor to transmit a trial prosthesis signal;
• (d) a computer having a receiver to receive (i) said prosthesis position signal and said reference position signal and create therefrom a first position value, and (ii) said reference position signal and said trial prosthesis signal and create therefrom a second position value, and programmed to compare said first position value with said second position value;
• and
• (e) an output to provide information indicating the proximity of the first position value to the second position value.

A method of providing information as to the position of a prosthesis compared to a desired position of the prosthesis, comprising:

• (a) associating a first sensor with the prosthesis, said first sensor capable of transmitting a prosthesis position signal;
• (b) attaching a second sensor to a body to transmit a reference position signal;
• (c) associating a third sensor with a trial prosthesis to transmit a trial prosthesis signal
• (d) operating a computer having a receiver to receive (i) said prosthesis position signal and said reference position signal and create therefrom a first position value, and (ii) said reference position signal and said trial prosthesis signal and create therefrom a second position value, and programmed to compare said first position value with said second position value;
• and
• (e) generating an output from the computer that indicates the proximity of the first position value to the second position value.