Patent ID: 7805852

Claim:
An instrument for the determination of a plane containing the mechanical axis of the femur of an inferior limb comprising a device in which there is provided: a mechanical means made of articulated and/or sliding elements in order to determine and memorize two positions, freely selected, in space (F 1 and F 2 ) of the same point (F) of the knee, when said knee is brought in positions P 1 and P 2 , relative to a referential system, positions being obtained by rotation of the inferior limb from the position P 1 towards the position P 2 , about the centre of the femoral head, a means for materializing an orientation of a plane omega passing through the middle of a line segment defined by the two said positions F 1 and F 2 , perpendicular to this segment and containing the centre of the femoral head.