Patent ID: 6102957
Filing Date: 2000-08-15
Classification: A61F

Abstract:
A prosthetic femoral hip stem comprising posterior, anterior, medial, and lateral faces, said stem further including:(a) a longitudinal axis;(b) a distal region having a distal tip, wherein cross-sections taken perpendicular to said longitudinal axis each include a distal region center;(c) a proximal region,; wherein cross sections taken perpendicular to said longitudinal axis through said proximal region each have a medial-most point and a center, such that a line taken from said proximal region center to said medial-most point is in parallel alignment with a line of each adjacent and superjacent cross-section of said proximal region; and(d) a mid-stem region disposed between said distal and proximal regions, said stem further including a twist extending about the longitudinal axis of the stem throughout said mid-stem region, said twist generally beginning at a distal boundary of the mid-stem region and ending at a proximal boundary of the mid-stem region, such that cross-sections taken perpendicular to said longitudinal axis through said mid-stem region each have a medial-most point and a center, such that a line taken from said mid-stem region center to said mid-stem medial-most point is in non-parallel alignment with a line of each adjacent and superjacent cross-section of said mid-stem region due to said twist.