A rod is used to guide a cutter through the intramedullary canal of a long bone. Loading and unloading of the cutter is done quickly by having a reduced cross-section near one end of the rod. Loading and unloading of the cutter can also be done quickly by having at least a portion of the rod be flexible...http://www.google.com.au/patents/US20040236339?utm_source=gb-gplus-sharePatent US20040236339 - Long bone reaming apparatus and method
