Abstract: A catheter for electrophysiology includes a shaft extending along a longitudinal axis to a distal end and an end effector coupled to the distal end of the shaft. The end effector includes a first loop member disposed on a first side of the longitudinal axis, a second loop member disposed on a second side of the longitudinal axis, and a third loop member. The third loop member includes a first spine disposed on the first side of the longitudinal axis. The first spine includes a first plurality of electrodes. The first spine is positioned radially outwardly of the first loop member relative to the longitudinal axis. The third loop member further includes a second spine disposed on the second side of the longitudinal axis. The second spine includes a second plurality of electrodes and is positioned radially outwardly of the second loop member relative to the longitudinal axis.

Abstract: A surgical instrument system includes a commonly-sized orthopaedic surgical instrument assembly for use in implanting a femoral component, along with a number of orthopaedic surgical instrument assemblies having varying sizes of instruments of use in implanting a tibial tray component and a patella component.

Abstract: A method, apparatus, and system for balancing a patient's knee joint during an orthopaedic surgical procedure includes measuring a conductance of a medial collateral ligament and a lateral collateral ligament of the patient's knee joint and balancing the tension of the medial and lateral collateral ligaments based on the measured conductance. The tension of the medial and lateral collateral ligaments may be balanced by reducing a difference between the measured conductance.