Patent ID: 6168632
Filing Date: 2001-01-02
Classification: A61F

Abstract:
A femur component for a hip joint endoprosthesis comprising: a shaft (1) to be anchored in a marrow cavity of a femur, said shaft having a distal segment (9) and a proximal segment (8), said shaft further comprising an anterior surface (4), a posterior surface (5), a lateral side (6), a mesial side (7) and a plane of symmetry (11); a neck (2) attached to said proximal segment (8), said neck being adapted to receive a pivot head; and a plurality of longitudinal ribs (10) extending in the proximal to distal direction on said anterior surface (4) and on said posterior surface (5) on said proximal segment (8) of said shaft (1), outwardly facing edges of said ribs comprising a comb structure, said edges lying in a double wedge or ellipsoidal surface tapering in the direction of both said lateral side (6) and said mesial side, wherein a width of each longitudinal rib decreases continuously in the proximal to distal direction, and a height of each longitudinal rib decreases continuously in the proximal to distal direction.