Comparison of varus and valgus information

A method, comprising:

• attaching a plurality of sensors to the skin of a patient near a joint, wherein:
• each sensor of the plurality of sensors has a known characteristic;
• a first sensor of the plurality of sensors is placed on a first side of the joint;
• a second sensor of the plurality of sensors is placed on a second side of the joint, wherein the second side of the joint is opposite the first side of the joint;
• and
• the plurality of sensors is movable with respect to the joint;
• capturing, by a handheld device, an image of the joint and the plurality of sensors;
• determining a bone centerline, wherein:
• the bone centerline is determined based on the captured image of the joint and the plurality of sensors;
• and
• a bone centerline is determined on each side of the joint;
• capturing, at the plurality of sensors, a first set of measurements of the joint, wherein:
• the first set of measurements further comprises:
• varus information;
• valgus information;
• and
• joint alignment;
• and
• the first set of measurements is captured while the patient is in a first position;
• transmitting the first set of measurements to the handheld device;
• capturing, at the plurality of sensors, a second set of measurements of the joint, wherein:
• the second set of measurements further comprises:
• varus information;
• valgus information;
• and
• joint alignment;
• and
• the second set of measurements is captured while the patient is in a second position;
• transmitting the second set of measurements to the handheld device;
• and
• determining a difference between the first set of measurements and the second set of measurements.