Patent ID: 8357204

Claim:
A set of mobile necks for inserting into a stem of a hip prosthesis, each neck comprising: a free end configured to be housed in a spherical head; and an end distal to the free end configured for insertion into a stem; wherein a length of the mobile neck, an inclination and an angle of anteversion or retroversion are independent variables, and the free end of each neck, except for three necks, can reach two points by rotating the end distal to the free end by 180°, and wherein the set is constituted by fifteen necks and the free ends of said fifteen necks terminate at twenty-seven mutually equidistant points arranged in three parallel rows located in three parallel equidistant planes, said two points in a space that said neck can reach being symmetric with respect to a central point of one of the three parallel equidistant planes in which the twenty seven mutually equidistant points are arranged, wherein, the free ends of nine necks, of said fifteen necks, terminate at nine mutually equidistant points arranged in three parallel rows for each plane of said three parallel equidistant planes, and wherein, said fifteen necks define a set of necks sufficient to fit any patient.