Patent ID: 8394149

Claim:
A method for implantation of an implant made in a cap shape onto a femoral head of a femur, comprising: choosing an implant made in a cap shape which comprises: a spherical outer surface defining a polar axis extending through a spherical center (M), a planar base, said polar axis perpendicular to a plane containing said planar base; a hollow space which is rotationally symmetrical about a hollow space axis the hollow space axis forming an angle α different than zero to the polar axis; resecting the femoral head so as to obtain a prepared stump representing a mating shape to the hollow space of the implant and being rotationally symmetrical with respect to an implantation axis (A); and working the femoral head so that the implantation axis (A) is inclined at least in a frontal plane with respect to the femoral neck axis (N) of the femur.