Knee joint prosthesis
AssigneeRobert G. Metzger et al.
InventorsRobert Metzger, Jacy Hoeppner
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Abstract
A modular component for a knee joint prosthesis is disclosed. The modular component includes a tray, a stem and an adapter assembly. The tray includes a support surface and downwardly extending extension having a generally circular shape. The stem includes a main body portion and an upwardly extending extension. The adapter assembly connects the tray and the stem. The adapter assembly includes a first generally cylindrical cavity receiving the downwardly extending extension of the tray and a second generally cylindrical cavity receiving the upwardly extension of the stem.
Claims26
A modular tibial component for a knee joint prosthesis, the modular tibial component comprising:
- a tray having a support surface and a first extension;
- a stem having a main body portion and a second extension;
- an adapter body connecting the tray and the stem and establishing a relative offset between the first extension of the tray and the second extension of the stem, the adapter body defining a first cavity to receive the first extension of the tray and a second cavity to receive the second extension of the stem, the adapter body further including a sidewall defining an opening;
- and
- a locking mechanism for coupling the tray to the stem, the locking mechanism including a first locking element passing through the opening and coupling the tray and the stem.
A modular component for implanting in a portion of an anatomy, comprising:
- a tray having a support surface and a first extension;
- a stem having a body portion and a second extension;
- an adapter operable to connect the tray and the stem, the adapter defining an internal cavity having a first portion to receive the first extension and a second position to receive the second extension, a passage defined by an outer wall of the adapter;
- and
- a locking member operable to pass through at least a portion of the passage defined by the adapter to operably interconnect the tray and the stem.
A modular component for a joint prosthesis comprising:
- a joint component;
- a stem having an extension;
- an adapter defining a first void extending relative to a first axis and a second void extending relative to a second axis;
- wherein the first void and the second void are defined by a side wall;
- a passage defined by the side wall;
- a locking member operable to pass through the passage and relative to the first axis, the second axis, or combinations thereof;
- wherein the locking element is operable to engage at least one of the tray, the first extension, or combinations thereof to assist in compressing the tray relative to the stem.
Dependencies are inferred from the claim text.