Patent ID: 7985261
Filing Date: 2011-07-26
Classification: A61F

Abstract:
1. An anti-impingement femoral prosthetic component, comprising: a stem having a distal portion adapted for placement within an intramedullary canal, a proximal end which remains externally exposed subsequent to fixation, and a longitudinal axis, “s”; a head having a center configured to co-act with a corresponding acetabular component; a coronal plane being defined as the plane which intersects “s” and the center of the head; a neck connecting the stem to the head, the neck having superior and inferior surfaces and a central region defined as the region of the neck between a line parallel to “s” along the most medial aspect of the stem and a line parallel to “s” and tangent to the lateral outer surface of the head closest to the superior surface of the neck; and wherein the superior and inferior surfaces of the neck define smooth, continuous curves in the coronal plane, with the apex of each curve being oriented distally, establishing a superior concave surface to reduce impingement of the central region of the neck on the acetabular component, thereby facilitating an enhanced range of motion in flexion/internal rotation and extension/external rotation.