Patent ID: 7828752

Claim:
A device for approximating a location of an anteroposterior femoral axis, or Whiteside's line, wherein the anteroposterior femoral axis is located at a lower end of a human femur, the device comprising: a body; an upper arm, which extends from the body; an upper engagement member that projects from the upper arm; a lower arm, which extends from the body, a lower engagement member that projects from a distal end of the lower arm, wherein the lower engagement member and the upper engagement member are spaced apart, a distal end of the lower engagement member is adapted to engage an anterior-most point within an intercondylar notch of the femur, when an axis of the lower arm lies generally in an anteroposterior plane, in which the femoral axis also lies, the upper engagement member is adapted to settle substantially in a deepest part of a trochlear groove of the femur, when the upper engagement member is urged toward the lower engagement member and when an axis of the upper arm lies generally in the anteroposterior plane, wherein the device is constructed and arranged so that when the lower engagement member engages the anterior-most point within the intercondylar notch of the femur and the upper engagement member engages substantially the deepest part of the trochlear groove of the femur, a line extending between the upper engagement member and the lower engagement member approximates the location of Whiteside's line.