Patent ID: 9737407
Date: 2017-08-22
CPC Classifications: A61F

Claim:
1. A hip prosthesis comprising a first component configured as a femoral stem and neck and a second component configured as either a femoral sleeve or a femoral head for securement on the femoral neck, wherein the femoral neck comprises a tapered surface which tapers in a proximal direction from a 14 mm diameter circular cross-section to a 12 mm diameter circular cross-section and at least four longitudinal grooves are machined along a whole or a portion of the tapered surface; wherein the longitudinal grooves are symmetrically spaced apart around a circumference of the tapered surface; wherein the second component comprises a complementary tapered recess and longitudinal elements for selective engagement in said longitudinal grooves; and wherein an axis of rotation of the femoral neck is parallel to but offset from a central axis of said second component when secured thereon.