Patent ID: 6383225
Filing Date: 2002-05-07
Classification: A61F

Abstract:
A set of femoral prosthetic components forming part of an enhanced range-of- motion total hip replacement system including a set corresponding acetabular components, each femoral component comprising:a stem having a distal portion adapted for placement within an intramedullary canal, a proximal end, and longitudinal stem axis, s; a head configured to co-act with a corresponding one of the acetabular components, the head being of a size and including a center, and wherein the distance between the center of the head and s defines an offset; a neck connecting the head to the proximal end of the stem, the neck having a first segment with a longitudinal axis n1 where the neck connects to the stem, and a second segment with a longitudinal axis n2 where the neck connects to the head, wherein n1 forms an angle a1 with s, and n2 forms and angle a2 with s, and a2 is greater than a1 to reduce impingement of the neck on the acetabular component, thereby enhancing the range of motion; and wherein the set includes femoral components with different head sizes, offsets and angles a1 or a2 to accommodate differing patient physiologies.