Patent · US Active

Determining femoral cuts in knee surgery

US8257360B2 · kind B2 · utility

99Cited by

3References

13Claims

0Family size

Assignee

ORTHOsoft, Inc. · CA

Inventors

Alain Richard · Dorval, CA
Patrick Garceau · Vernon, FR
Simon-Paul Dominati · Marseilles, FR

Key dates

Filing date	Apr 30, 2003
Grant date	Sep 4, 2012
Priority date	—
Expiry date	Jul 3, 2027

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61B2090/061
WIPO fieldMedical technology
WIPO sectorInstruments

Abstract

There is provided a method and system for determining a distal cut thickness and posterior cut thickness for a femur in a knee replacement operation, the method comprising: performing a tibial cut on a tibia; performing soft tissue balancing based on a desired limb alignment; measuring an extension gap between the femur and said tibial cut while in extension; measuring a flexion gap between the femur and the tibial cut while in flexion; calculating a distal cut thickness and a posterior cut thickness for the femur using the extension gap and the flexion gap and taking into account a distal thickness and posterior thickness of a femoral implant; and performing said femoral cut according to the distal cut thickness and posterior cut thickness.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.