A disposable reamer (10) designed to improve bone and tissue removal efficiency is described. The reamer device comprises a reamer body shell (26), a series of reamer blades (16) and a reamer shaft interface (14). The reamer body shell has a hemispherical structure having a concave interior surface and a convex outer surface. The series of reamer blades have a cutting portion comprised of a series of discrete cutting edges that is bent at an angle from the planar portion of the blade. The reamer blades are positioned along the curved concave interior surface of the hemispherical shell or along the curved convex outer surface of the shell. The reamer blades are positioned along the hemispherical shell such that their leading edges lie parallel to and tangent a bisecting plane.
