Knee resection and gap balancing instruments and techniques for kinematic alignment

US11033281B2 · kind B2 · utility

Assignee

• Zimmer, Inc. · US

Inventors

• Mark David Erickson · Ankeny, US
• Edward R. Yager · Fort Wayne, US
• Justin J. Kaler · Fort Wayne, US
• Ryan Girst · South Bend, US

Key dates

• Filing date: Apr 3, 2019
• Grant date: Jun 15, 2021
• Expiry date: Dec 13, 2039

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2090/067
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

Devices and methods for performing total knee arthroplasty procedures with kinematic alignment are described herein. A method of performing a total knee arthroplasty can comprise positioning a femoral cut guide adjacent a distal end of a femur, positioning a tibial cut guide proximate a proximal end of a tibia adjacent an anterior surface of the tibia, adjusting a position of the femoral cut guide and the tibial cut guide relative to each other using a tibial positioning device, fixing the position of the femoral cut guide relative to the tibial cut guide using the tibial positioning device, and resecting the femur and tibia with parallel resections using the femoral and tibial cut guides.