Verfahren zum Entwurf eines Tibialen Lagereinsatzes, Kit mit einem nach Diesem Verfahren Entworfenen Tibialen Lagereinsatz und Computerlesbares Medium

Details

Veröffentlichungs-Nr.

EP4748350

Anmeldetag

6. März 2024

Veröffentlichung

27. Mai 2026

Rechtsraum

EP

IPC

A61F2/38

Abstract

A method of designing a tibial bearing insert includes: identifying a radial arc centerline axis of a tibial bearing insert, the radial arc centerline axis passing through an apex of a lateral radial arc of the tibial bearing insert and an apex of a medial radial arc of the tibial bearing insert, both in a first transverse plane, the lateral and medial radial arcs representing lines of minimum thickness of the tibial bearing insert between an anterior side and a posterior side of the tibial bearing insert on an initial articular surface of the tibial bearing insert; aligning a center axis of a femoral flexion radius of a femoral component with the radial arc centerline axis such that the center axis and the radial arc centerline axis are coincident with a first coronal plane; while keeping the center axis in the first coronal plane, aligning the femoral component with the tibial bearing insert by positioning the femoral component such that an inferior most point of a circle representative of the femoral flexion radius and centered on the center axis defines a predetermined minimum thickness of the tibial bearing insert; and subsequent to aligning the center axis and aligning the femoral component with the tibial bearing insert, modifying a curvature of the initial articular surface of the tibial bearing insert between the anterior side and the posterior side to a modified articular surface that corresponds to a portion of the circle.

Anmelder

Firma

Howmedica Osteonics Corp.

Land

🇺🇸 USA