Patent ID: 8951301
Filing Date: 2015-02-10
Classification: A61F,Y10T

Abstract:
1. A method of trialing prosthetic components of a knee prosthesis, the method comprising positioning a tibial base trial component on a surgically-prepared proximal end of a patient's tibia, inserting a base insert into an opening defined in the tibial base trial component, the base insert having a central post extending away from an upper surface thereof, selecting a tibial bearing surface trial component from a plurality of tibial bearing surface trial components, each tibial bearing surface trial component having a configuration, securing a shim to the selected tibial bearing surface trial component to form a tibial bearing trial assembly, securing the shim including positioning a pair of pegs of the tibial bearing surface trial component into a pair of openings defined in the shim, positioning the tibial bearing trial assembly over the central post of the base insert, and adjusting the patient's leg with the tibial bearing trial assembly positioned over the central post of the base insert, wherein (i) if a first tibial bearing surface trial component is selected, securing the shim includes securing the shim to the first tibial bearing surface trial component in a first orientation and adjusting the patient's leg includes rotating the tibial bearing trial assembly relative to the tibial base trial component, and (ii) if a second tibial bearing surface trial component is selected, securing the shim includes securing the shim to the second tibial bearing surface trial component in a second orientation such that the tibial bearing trial assembly is substantially prevented from rotating relative to the tibial base trial component wherein the configuration of the first tibial bearing surface trial component is different from the configuration of the second tibial bearing surface trial component.