Patent ID: 7494510

Claim:
A hip-joint endoprosthesis system comprising: a rasp configured for forming a cavity in a femur having substantially the same configuration as the rasp, the rasp having an anterior face, a posterior face generally opposite the anterior face, a lateral face, and a medial face generally opposite the lateral face, a distance between the anterior and posterior faces defining a first dimension, a distance between the lateral and medial faces defining a second dimension, each of the rasp faces disposed adjacent another of the rasp faces and defining an edge therebetween; and a shaft configured to be anchored in the cavity, the shaft having an anchoring section extending between a proximal region and a distal end of the shaft, the anchoring section defining an anterior face, a posterior face generally opposite the anterior face, a lateral face, and a medial face generally opposite the lateral face, a distance between the anterior and posterior faces defining a third dimension, a distance between the lateral and medial faces defining a fourth dimension, each of the shaft faces being adjacent another of the shaft faces and defining a junction therebetween said junction being a concave facet, wherein the third dimension is greater than the first dimension.