Patent ID: 8672862
Filing Date: 2014-03-18
Classification: A61B,A61F

Abstract:
1. A femoral head center identifying apparatus for identifying, during total knee replacement surgery, a position of a center of a femoral head of a patient undergoing the surgery within a plane parallel to a frontal plane, the apparatus comprising: a marking plate placed so as to cover, in a direction perpendicular to the frontal plane, a site where the femoral head center of a body of the patient is located; a pivotal arm having a pivotal shaft that is arranged so as to extend in a direction perpendicular to the frontal plane; and a marker attached to the pivotal arm, for depicting a circular arc on the marking plate according to rotation of the pivotal arm; the pivotal shaft is configured to be placed at a distal end of a femur of the patient, a distance from the pivotal shaft to the marker in a direction parallel to the frontal plane being equal to a measured preliminary distance from the distal end of the femur to the femoral head center.