Patent ID: 7025788
Filing Date: 2006-04-11
Classification: A61F

Abstract:
1. A modular tibial component for a knee joint prosthesis, the modular tibial component comprising: a tray having a support surface and a downwardly extending extension having a generally circular shape; a stem having a main body portion and an upwardly extending extension; an adapter body connecting the tray and the stem and establishing a relative offset between the downwardly extending extension of the tray and the upwardly extending extension of the stem, the adapter body including a first generally cylindrical cavity receiving the downwardly extending extension of the tray and a second generally cylindrical cavity intersecting the first generally cylindrical cavity and receiving the upwardly extending extension of the stem; a locking arrangement for coupling the tray to the stem, the locking arrangement extending between the first and second generally cylindrical cavities, the locking arrangement including a first member removably engaging the tray and a second member removably engaging the stem, the first and second members rotatably coupled to one another within the adapter body; and wherein the first and second members are directly coupled to one another within the adapter body, wherein the first member threadably receives a fastener extending through the tray; wherein the first member includes a radially extending portion engaging a reduced diameter portion of the second member.