Abstract: A prosthetic system that includes a prosthetic implant and a support structure secured to an inner surface of the cavity in the end of the bone is disclosed. The support structure defines a channel that extends through the length of the support structure. The prosthetic implant is received in the channel, and a portion of the prosthetic implant is secured to an inner surface of the channel by an adhesive. The stem of the prosthesis beyond the channel may be cemented or uncemented. The support structure may have an approximately funnel shape. The support structure may be a hollow porous cylindrical sleeve. The support structure may comprise a pair of partially hemispherical components arranged in spaced apart relationship thereby defining a channel between the pair of components. The support structure may comprise a plurality of pedestals secured to the inner surface of the cavity of the bone.

Abstract: A tool lays out resection or alignment features to prepare a bone end for prosthetic joint replacement. The tool attaches to the end of the femur, and positions an initial cut, for example a pair of aligned drill holes for the positioning pins of a prosthesis or the cutting blocks used in preparing the distal femur. The tool includes adjustable assemblies coupled to a main body for setting its position, and these are arranged with graduations for sizing the femur. The adjustable assemblies include an epicondylar engaging assembly such as a pair of clamp arms which slide in the body to align the body along the epicondylar axis. It further includes one or more other assemblies which determine a line, offset depth or other coordinate or component of orientation to set the drill guide for optimally locating the initial cut in the femur.