Intraoperative dynamic trialing

US9427336B2 · kind B2 · utility

Assignee

• Stryker Corporation · US

Inventors

• Stuart L. Axelson, Jr. · Rahway, US
• Emily Hampp · Far Hills, US
• John R. Fossez · Frisco, US

Key dates

• Filing date: Aug 23, 2013
• Grant date: Aug 30, 2016
• Expiry date: Mar 28, 2034

Classification

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

Abstract

A dynamic trialing method generally allows a surgeon to perform a preliminary bone resection on the distal femur according to a curved or planar resection profile. With the curved resection profile, the distal-posterior femoral condyles may act as a femoral trial component after the preliminary bone resection. This may eliminate the need for a separate femoral trial component, reducing the cost and complexity of surgery. With the planar resection profile, shims or skid-like inserts that correlate to the distal-posterior condyles of the final insert may be attached to the distal femur after the preliminary bone resection to facilitate intraoperative trialing. The method and related components may also provide the ability of a surgeon to perform iterative intraoperative kinematic analysis and gap balancing, providing the surgeon the ability to perform necessary ligament and/or other soft tissue releases and fine tune the final implant positions based on data acquired during the surgery.