Abstract: A femoral hip prosthesis has a body having a body lateral face, a body medial face, a body front face and a body rear face. A stem extends longitudinally from a lower end of the body along a central stem axis. A neck extends from an upper end of the body along a central neck axis inclined at an obtuse angle to the central stem axis. The body lateral face is provided with a series of longitudinally spaced lateral face teeth transversely extending between the body front face and body rear face. Each of the lateral face teeth has an upper face inclined with respect to an adjacent tangent of the body lateral face by between 60 and 120 degrees.

Abstract: A femoral component of a hip implant is disclosed. The femoral component may be used specifically in a neck sparing resection (i.e., any process or device that avoids removing the femoral neck) and may include a shortened stem (with respect to a conventional stem) having a terminal flare portion for internally contacting a medial calcar portion of the proximal femur, and a significant curvature on its medial side. Other features of the femoral component include, flat side portions on the anterior and posterior sides of the stem, a lateral fin or a wing or T-back to aid in resisting torsional forces. The femoral component may also include a sagittal slot for proper fitting and placement in the femoral canal. The femoral component may also include a neck component that is modular with respect to the stem component. A head component, whether monoblock or modular with respect to the neck component, may also be utilized as part of the femoral component.