Abstract: A selective message broadcasting system. The system can include fixed storage configured to store pre-recorded audio messages. A digital audio system can be coupled to the fixed storage, and can include playback logic for playing back selected ones of the pre-recorded audio messages. A center frequency modulator can be coupled to the digital audio system and the modulator can be configured to modulate the selected ones of the pre-recorded audio messages about a center frequency in a particular broadcast spectrum. Finally, a frequency band comb distributor can be coupled to the center frequency modulator and configured to replicate the modulated selected ones of the pre-recorded audio messages across a set of frequency transmission channels in the particular broadcast spectrum while maintaining a silence interval between each of the frequency transmission channels in the particular broadcast spectrum. Notably, the broadcast spectrum can include the FM spectrum and the AM spectrum.

Abstract: A selective message broadcasting system. The system can include fixed storage configured to store pre-recorded audio messages. A digital audio system can be coupled to the fixed storage, and can include playback logic for playing back selected ones of the pre-recorded audio messages. A center frequency modulator can be coupled to the digital audio system and the modulator can be configured to modulate the selected ones of the pre-recorded audio messages about a center frequency in a particular broadcast spectrum. Finally, a frequency band comb distributor can be coupled to the center frequency modulator and configured to replicate the modulated selected ones of the pre-recorded audio messages across a set of frequency transmission channels in the particular broadcast spectrum while maintaining a silence interval between each of the frequency transmission channels in the particular broadcast spectrum. Notably, the broadcast spectrum can include the FM spectrum and the AM spectrum.

Abstract: A cable passing apparatus useful in passing a cable around a bone. The cable is used to repair broken bone during an orthopaedic surgery. The cable passer comprises a cannulated internal assembly that is extendable at least partially around a bone. A cable suitable for surgical applications can be threaded through the apparatus and removed as desired.

Abstract: An orthopaedic reaming apparatus, more specifically a low profile acetabular reamer useful in the performance of a minimally invasive or traditional hip arthroplasty. The acetabular reamer of the present invention comprises a convex non-hemispherical cutting surface having a plurality of cutting teeth disposed thereon.

Abstract: An orthopaedic instrument for comparing post-surgical joint geometry to pre-surgical joint geometry. The instrument has a head chuck which can be secured to the ball of a ball joint, and an arm having reference indicia thereon. Markings indicative of the pre-surgical joint geometry are made on the bone with reference to the center of the ball. After replacement with a prosthetic ball, the post-operative geometry is verified by securing the head chuck to the prosthetic ball, and comparing the location of the bone markings against the reference indicia on the arm. As needed, adjustments are made in the prosthetic components.