Abstract: Embodiments of the present invention relate to a force sensing system and method for total knee arthroplasty. For example, a force sensing system includes a spacer block that is adapted to be positioned adjacent a resected distal femur and a resected proximal tibia. The spacer block is configured to receive a first force applied by the resected distal femur and a second force applied by the resected proximal tibia. The force sensing system also includes at least one sensor that is associated with the spacer block and that is adapted to measure one or more forces exerted on the spacer block. Moreover, the force sensing system includes a display that is adapted for displaying an indication of the one or more forces measured by the at least one sensor.