Patent ID: 9636227
Date: 2017-05-02
CPC Classifications: A61F

Claim:
1. A hip prosthesis having a medial side, a lateral side, an anterior side, and a posterior side, the hip prosthesis comprising: a neck; and a stem defining a longitudinal axis and having a proximal portion, a distal portion, and a transition portion extending between the proximal portion and the distal portion of the stem, the proximal portion of the stem including an anterior locking surface, a posterior locking surface, and a lateral surface, the anterior locking surface and the posterior locking surface of the proximal portion converging medially and forming a first included angle of between six degrees and twenty degrees, the lateral surface of the proximal portion having an inflection point at which the lateral surface transitions from a flat relief surface to a conical tapering surface, the flat relief surface angling toward the longitudinal axis of the stem in a proximal direction from the inflection point and the conical tapering surface angling toward the longitudinal axis of the stem in a distal direction from the inflection point.