Patent ID: 7455693

Claim:
A method of implanting a hip-joint prosthesis in a femur, the method comprising: providing a shaft of a hip-joint prosthesis having a femur-anchoring section tapering along a longitudinal axis toward a distal end, said femur anchoring section further comprising an anterior face, a posterior face, a lateral face and a medial face with corner facets defined at junctions of adjacent faces, the shaft having an external contour with a substantially trapezoidal shape in a plane perpendicular to the longitudinal axis, the corner facets having a concave shape; rasping a cavity in an interior of a femur and shaping an anchoring section of the cavity to have an anterior-posterior dimension that is smaller than a corresponding anterior-posterior dimension of the shaft; and shaping the facets in the anchoring section of the shaft to match the rasped dimensions in corner regions of the cavity.