FEMORAL COMPONENT FOR A HIP PROSTHESIS

摘要

A femoral component for a hip prosthesis has a distal portion defining a central longitudinal axis. The component has a generally conically shaped mid-shaft portion and a proximal portion with a shape based on the reamer and a shaped chisel used by the surgeon to prepare the proximal metaphysis and medullary canal. The proximal portion is shaped in a manner wherein a cross-section taken perpen-dicular to the central axis has a medial side formed as a first circular arc, a comer of the cross-section formed by the posterior and lateral sides as a second circular arc with a center on the central axis. The posterior side is arcuate and concave andtangent to the first and second circular arcs, with the anterior side being arcuate and convex.