Mobile bearing unicompartmental knee

US6946001B2 · kind B2 · utility

Assignee

• Zimmer Technology, Inc. · US

Inventors

• Adam H. Sanford · Los Angeles, US
• Toby N. Farling · Warsaw, US
• Vincent A. Webster · Warsaw, US
• Robert A. Hodorek · Warsaw, US
• Scott Lazar · Ashland, US
• Scott Steffensmeier · Winona Lake, US

Key dates

• Filing date: Feb 3, 2003
• Grant date: Sep 20, 2005
• Expiry date: Feb 3, 2023

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/3895
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An orthopedic knee component for implanting within a single compartment of a human knee includes, in a first embodiment a tibial tray having a superior surface having a plurality of tabs disposed along an exterior edge thereof, a bearing component having a superior surface adapted to articularly engage a femoral knee prosthesis and a circumferential groove disposed therearound with which the tabs of the tibial tray cooperatively engage such that the bearing component is movable relative to the tibial tray. In a second embodiment, an orthopedic knee component for implanting within a single compartment of a human knee includes: a tibial tray in supporting engagement with a bearing component, wherein the bearing component includes a superior surface adapted to articularly engage a femoral knee prosthesis and a pair of slots disposed along the superior surface of the bearing component, the femoral component having a pair of rails extending from the articulating surface thereof such that the rails can slidingly engage the slots, and such that the bearing component is movable relative to the tibial tray.