Tibial trial system for a knee prosthesis and method

An orthopaedic surgical instrument system for use during a surgical procedure to implant an orthopaedic knee prosthesis, comprising:

• an insert component having a base plate and a central post extending upwardly from a superior surface of the base plate, wherein a superior surface of the central post has a ramp surface defined therein, the ramp surface inclines superiorly in an anterior-to-posterior direction, and
• a tibial bearing trial component having an opening defined therein, the central post of the insert component being configured to be received in the opening of the tibial bearing trial component.

An orthopaedic surgical instrument system for use during a surgical procedure to implant an orthopaedic knee prosthesis, comprising:

• a tibial base trial component adapted to be positioned on a surgically-prepared proximal end of a patient's tibia, the tibial base trial component having an opening defined therein, and
• a plurality of insert components each shaped to be received in the opening defined in the tibial base trial component, the plurality of insert components each having a base plate and a central post extending upwardly from a superior surface of the base plate, wherein a superior surface of the central post has a ramp surface defined therein, the ramp surface inclines superiorly in an anterior-to-posterior direction.