Patent ID: 7611541

Claim:
A prosthetic femoral implant suitable for use in hip arthroplasty, said implant comprising: a. a longitudinal stem having a distal end and a proximal end, said stem further having a longitudinal axis extending from said proximal end to said distal end; and b. a neck portion extending from said proximal end of said stem and having a longitudinal neck axis; said neck portion having a transverse cross-section taken perpendicular to the longitudinal neck axis; wherein the transverse cross-section has a medial portion comprising a medial radius; an anterior portion comprising an anterior tapering portion, said anterior tapering portion tapering outwardly in the medial to lateral direction; a posterior portion comprising a posterior tapering portion, said posterior tapering portion tapering outwardly in the medial to lateral direction; and a lateral portion; wherein the anterior and posterior portions define an anterior/posterior width at a location of greatest anterior/posterior distance between the anterior tapering portion and the posterior tapering portion; and wherein the medial radius is about 33% or less of the anterior/posterior width.