Fixing lug a cement, to male part of a ball joint of the hip emerge.

摘要

The present invention relates to the fixation brackets for the male part of a femoral prosthesis ball-joint capable of being fixed in the medullary cavity of a femur. The bracket according to the invention comprises a shaft 1 and a head 2 which is integral with the shaft, the head having a frustoconical shape along an axis of fixation 5. The shaft 1 comprises two parts 6, 7, the part 6 being limited by a concave inner side 8 and by an outer side 9 which is delimited by two surfaces, one convex 10 and one concave 11, these surfaces intersecting at an angular point 12; the part 7 defining an axis of direction of introduction 13 into the femur and being delimited by an inner side 14 and an outer side 15 which are substantially rectilinear. The point 17 common to the rectilinear outer side 15 of the part 7 and to the convex surface 10 of the second side 9 of the first part 6 is situated on the axis of fixation 5. The large base 18 of the head 2 forms a shoulder 20 via which the head 2 is integral with the first part 6, the tangent 25 at point 12 to the concave surface 10 of the side 9 intersecting the axis of fixation 5 on the small base 26 of the head 2. IMAGE