Total knee implant

US8888856B2 · kind B2 · utility

Assignee

• Zimmer, Inc. · US

Inventors

• Christopher M. Byrd · Elkhart, US
• Adam H. Sanford · Los Angeles, US
• Brian D. Earl · South Bend, US
• Jody L. Claypool · Columbia City, US
• Jeffrey D. Brown · Palo Alto, US
• John E. Pendleton · Dunwoody, US

Key dates

• Filing date: Jan 27, 2010
• Grant date: Nov 18, 2014
• Expiry date: Dec 12, 2030

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2250/0073
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A knee prosthesis is provided for use in knee arthroplasty. In one exemplary embodiment, the present invention provides a tibial prosthesis having a tibial baseplate with a fixed medial bearing component and a mobile lateral bearing component. In one exemplary embodiment, the lateral bearing component is secured to the lateral portion of the tibial baseplate utilizing at least one prosthetic ligament. Additionally, in one exemplary embodiment, a stop is provided to limit anterior or posterior movement of the lateral bearing component relative to the tibial baseplate. For example, the stop may be defined by cooperating shoulders formed on the lateral bearing and the tibial baseplate.