Patent ID: 11865011
Assignee: nan
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 13:
14. A tibial insert comprising:
a lateral articular surface configured to articulate with a lateral condyle of a femoral component, wherein the lateral articular surface includes an arcuate articular path extending in an anterior-posterior direction, a lateral dwell point that defines a distal-most point on the lateral articular surface located on the arcuate articular path, and an anterior lateral lip, wherein an inferior-superior distance between the lateral dwell point and a superior-most point of the anterior lateral lip defines a lip height of the anterior lateral lip; and
a medial articular surface configured to articulate with a medial condyle of the femoral component, wherein the medial articular surface is asymmetrically shaped relative to the lateral articular surface and includes a medial dwell point that defines a distal-most point on the medial articular surface and an anterior medial lip, wherein an inferior-superior distance between the medial dwell point and a superior-most point on the anterior medial lip defines a lip height of the anterior medial lip,
wherein (i) the lip height of the anterior medial lip is greater than the lip height of the anterior lateral lip and (ii) a ratio of the lip height of the anterior medial lip to an anterior-posterior distance between an anterior sidewall of the medial articular surface and a posterior sidewall of the medial articular surface is in the range of 18.9% to 20.9%, and
wherein the medial articular surface includes a sagittal concave curvature, when viewed in a sagittal plane, that is defined by a plurality of curved sections, wherein the medial dwell point is located on the sagittal concave curvature, and
wherein the plurality of curved sections includes a first curved section adjacent to the medial dwell point and extending posterior therefrom, a second curved section adjacent the medial dwell point and extending anterior therefrom, a third curved section adjacent to the second curved section and extending anterior therefrom, a fourth curved section adjacent to the third curved section and extending anterior therefrom, and a fifth curved section adjacent the fourth curved section and extending anterior therefrom, and
wherein a radius of curvature of the first curved section is greater than a radius of curvature of the second curved section, and wherein a radius of curvature of the third curved section is less that the radius of curvature of the second curved section, less than a radius of curvature of the fourth curved section, and less than a radius of the fifth radius of curvature.