Patent ID: 7981159

Claim:
A knee replacement system comprising: a femoral component including a lateral condylar articulating portion and a medial condylar articulating portion; a tibial tray including an upper articulating surface; and a tibial insert including (i) a first articulating portion configured to articulate with the lateral condylar articulating portion with a first condylar dwell point, (ii) a second articulating portion configured to articulate with the medial condylar articulating portion with a second condylar dwell point, (iii) a lower articulating surface configured to articulate with the upper articulating surface, and (iv) a coupling member configured to couple with the tibial tray and defining an axis of rotation about which the tibial insert rotates with respect to the tibial tray, the axis of rotation intersecting the upper articulating surface at a location posterior to a dwell axis including the first condylar dwell point and the second condylar dwell point when the dwell axis is projected onto the upper articulating surface, wherein the axis of rotation intersects a tibial insert centerline projected onto the upper articulating surface at a location between about 0.2 inches and about 0.5 inches posterior to the intersection of the projected centerline and the projected dwell axis.