Joint revision surgery apparatus

A method of making a joint revision surgery system comprising the steps of:

• (a) providing a surgical knife blade guide block having two half sections which when assembled form a centrally located retaining ring cavity, wherein each half section has a front portion and a rear portion and each half section has a top surface and a bottom surface;
• (b) providing one or more surgical knife blade guide slots for accepting surgical knife blades, located in the top surface of said half sections, in both the front portion and the rear portion, wherein said one or more surgical knife blade guide slots each lead to one or more surgical knife blade guide channels extending through said surgical knife blade guide block;
• (c) providing a plurality of retaining rings located within said retaining ring cavity and securely held in place within the assembled surgical knife blade guide block for the purpose of affixing to a trunnion section of a femoral stem;
• and
• (d) providing a plurality of rigid and flexible, curved and straight surgical knife blades wherein said knife blades are attachable to an osteotome;
• wherein said surgical knife blade guide block is affixed to a femoral stem for extraction by attaching said retaining rings to the trunnion of said stem, and then passing said rigid and flexible surgical knife blades through said slots and extending said surgical knife blades through said channels to reach the femoral stem and cut the femoral stem free from the femur.

A method for using a joint revision surgery system to extract a collared femoral stem, comprising the steps of:

• (a) exposing the patient's hip in anterior, direct anterior, lateral, and/or posterior procedure, dislocating the hip and removing the head, and exposing the femoral side of the total hip;
• (b) exposing the area of femur bone directly below the collar, then using an osteotome to remove a small portion of the bone below the collar on the femoral calcar, creating a triangular shaped void where the bone has been removed;
• (c) releasing the medial and lateral sides of the stem with the osteotome of choice, using a pickle fork or single blade extraction apparatus;
• (d) securing the guide block on the stem trunnion and tapping it into place until it is irreversibly attached to the stem trunnion retaining rings;
• (e) inserting and running the shorter rigid guide blade through the guide block in the correct knife guide block slot that allows the blade to go past the collar and below the collar into the removed bone void in step (b) above, touching the stem, then backing up the inserted rigid blade about 2-4 millimeters away from the stem;
• (f) introducing the longer flexible cutting blade on top of the rigid guide blade to cut through the cement holding the stem in place and release the medial calcar, using the first inserted rigid blade as a guide for the flexible cutting blade;
• (g) releasing the lateral aspect of the stem with a combination of the rigid blade and the flexible blade through the slot, and
• (h) removing the stem manually by hand, or if removal manually by hand is not possible, securing an eye bolt onto the guide block and using a slap hammer with a hook by placing the hook through the eye bolt and gently removing the fully released stem.