Abstract: A prosthesis for replacing bone extracted from a cadaver. A preferred prosthesis is formed of two tubes of differing diameter, the larger-diameter tube beng slidable over the smaller-diameter tube to provide a telescoping assembly. A stop is provided on the smaller tube, and is adjustably positioned thereon for operatively contacting an end of the larger tube to resist contraction of the assembly after insertion within a cadaver. Threaded pins are provided at the ends of the assembly for engagement within bone of a skeleton of the cadaver. The prosthesis retains the physical appearance of a cadaver after extraction of bone for use in surgical and other therapeutic purposes on living organisms.