A computing device, comprising: a display having a first display screen; an electronic controller; and a memory device storing instructions executable by the electronic controller, the instructions being executable by the electronic controller to present a user interface on the first display screen, the user interface comprising: a two-dimensional representation of an area of a provisional component, positionable between a femur and a tibia and including a plurality of sensors (204A-L) located over the area, the plurality of sensors being divided into medial (204G-L) and lateral (204A-F) subsets of sensors, the medial subset of sensors consisting of the sensors from the plurality that are positioned between a center of the provisional component and a medial side of the provisional component, the lateral subset of sensors consisting of the sensors from the plurality that are positioned between a center of the provisional component and a lateral side of the provisional component; a plurality of sensor icons (254A-L) having locations on the first display screen corresponding to the sensor locations on the provisional component; and a medial force center indicator, a lateral force center indicator and an overall force center indicator having respective positions on the first display screen determined by the electronic controller based on sensed force data and sensor locations from sensors in the medial subset of sensors, the lateral subset of sensors, and all of the plurality of sensors, respectively, the positions variable in the medial-lateral and anterior posterior directions based on the variations in force data measured by the plurality of sensors in a medial-lateral direction and an anterior-posterior direction, respectively. a display having a first display screen; an electronic controller; and a memory device storing instructions executable by the electronic controller, the instructions being executable by the electronic controller to present a user interface on the first display screen, the user interface comprising: a two-dimensional representation of an area of a provisional component, positionable between a femur and a tibia and including a plurality of sensors (204A-L) located over the area, the plurality of sensors being divided into medial (204G-L) and lateral (204A-F) subsets of sensors, the medial subset of sensors consisting of the sensors from the plurality that are positioned between a center of the provisional component and a medial side of the provisional component, the lateral subset of sensors consisting of the sensors from the plurality that are positioned between a center of the provisional component and a lateral side of the provisional component; a plurality of sensor icons (254A-L) having locations on the first display screen corresponding to the sensor locations on the provisional component; and a medial force center indicator, a lateral force center indicator and an overall force center indicator having respective positions on the first display screen determined by the electronic controller based on sensed force data and sensor locations from sensors in the medial subset of sensors, the lateral subset of sensors, and all of the plurality of sensors, respectively, the positions variable in the medial-lateral and anterior posterior directions based on the variations in force data measured by the plurality of sensors in a medial-lateral direction and an anterior-posterior direction, respectively. a two-dimensional representation of an area of a provisional component, positionable between a femur and a tibia and including a plurality of sensors (204A-L) located over the area, the plurality of sensors being divided into medial (204G-L) and lateral (204A-F) subsets of sensors, the medial subset of sensors consisting of the sensors from the plurality that are positioned between a center of the provisional component and a medial side of the provisional component, the lateral subset of sensors consisting of the sensors from the plurality that are positioned between a center of the provisional component and a lateral side of the provisional component; a plurality of sensor icons (254A-L) having locations on the first display screen corresponding to the sensor locations on the provisional component; and a medial force center indicator, a lateral force center indicator and an overall force center indicator having respective positions on the first display screen determined by the electronic controller based on sensed force data and sensor locations from sensors in the medial subset of sensors, the lateral subset of sensors, and all of the plurality of sensors, respectively, the positions variable in the medial-lateral and anterior posterior directions based on the variations in force data measured by the plurality of sensors in a medial-lateral direction and an anterior-posterior direction, respectively.