Orthopaedic surgical system for determining joint forces of a patients knee joint

An orthopaedic surgical system for determining a joint force of a patient's joint, the orthopaedic surgical system comprising:

• a sensor module comprising a tibial paddle shaped to be positioned between a proximal end of a patient's tibia and a distal end of a patient's femur, an elongated handle secured to the tibial paddle, and a sensor array position in the tibial paddle and configured to generate sensor signals indicative of a joint force between the patient's tibia and femur, the tibial paddle including an inner sidewall defining a centrally-located aperture,
• an adaptor attachable and detachable from the tibial paddle of the sensor module, the adaptor including a hub, a plurality of lower retainer clips extending downwardly from the hub and receivable in the centrally-located aperture to attach the adaptor to the tibial paddle, and a plurality of upper retainer clips extending upwardly from the hub and sized such that the plurality of upper retainer clips are not receivable in the centrally-located aperture, and
• a tibial trialing component that is positionable over the adaptor in a first orientation that limits rotation of the tibial trialing component to rotate relative to the tibial paddle and a second orientation that allows rotation of the tibial trialing component relative to the tibial paddle.