Confidence in Stability
By controlling the translation of the lateral condyle in extension, and giving increased lateral A/P laxity in flexion, the 3DKnee articulating surface is designed to substitute for the function of the now-absent ACL and provide intrinsic AP stability to the replaced knee [4].
The 3DKnee femoral design incorporates a single radius of curvature. This design feature seeks to reduce mid-flexion instability and creates a more stable joint in terms of varus/valgus laxity [5,6]. Less compensatory muscle activity is required to stabilize the total joint [7].
The 3DKnee insert is used with or without an intact PCL. A stable articulating surface is created without the use of a less bone sparing post and cam design. The high anterior lip and conforming articulating surface stabilize the femur on the insert.
