Patient-specific knee alignment guide and associated method

US8398646B2 · kind B2 · utility

Assignee

• Biomet Manufacturing, LLC · US

Inventors

• Robert Metzger · Wakarusa, US
• Keith R. Berend · New Albany, US
• Michael E. Berend · Indianapolis, US
• Adolph V. Lombardi · New Albany, US
• Lance D. Perry · Warsaw, US
• Ryan J. Schoenefeld · Fort Wayne, US

Key dates

• Filing date: Nov 23, 2011
• Grant date: Mar 19, 2013
• Expiry date: Nov 23, 2031

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2034/108
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An orthopedic device for preparing a knee joint for a prosthesis in a patient includes a femoral alignment guide. The femoral alignment guide has a patient-specific three-dimensional curved inner surface preoperatively configured from medical image scans of the knee joint of the patient to nestingly conform and mate and match only in one position to a corresponding three-dimensional femoral surface of a joint surface of the patient. The femoral alignment guide has a first guiding aperture corresponding to a distal portion of the femoral surface and a second guiding aperture corresponding to an anterior portion of the femoral surface.