Total knee arthroplasty methods, systems, and instruments

US9707086B2 · kind B2 · utility

Assignee

• Orthopaedic International, Inc. · PH

Inventors

• Ilustre I. Guloy, Jr. · Pagsanjan, PH
• Ramon B. Gustilo · Eden Prairie, US
• Jesus Munoz · Imus, PH
• Paul Cesar N. San Pedro · Quezon, PH
• Jude L. Sasing · Quezon, PH

Key dates

• Filing date: Feb 7, 2014
• Grant date: Jul 18, 2017
• Expiry date: Jun 19, 2035

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61F2002/4668
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A method of performing a total knee arthroplasty including the steps of inserting a first pin into the distal femur and through the knee center, locating the femoral mechanical axis, inserting at least one additional pin into the distal femur, locating the tibial mechanical axis, sizing the femur and applying a femoral cutting block having at least one cutting guide to an end of the femur, positioning a tibial cutting block having a least one cutting guide in a cutting position relative to the tibia, aligning the femoral cutting block relative to the tibial cutting block, aligning the femur relative to the tibia, cutting the femur using the at least one femoral cutting guide, cutting the tibia using the at least one tibial cutting guide, removing the femoral and tibial cutting blocks, and positioning permanent femoral and tibial components on the cut portions of the femur and tibia, respectively.