System and method to alter bone growth in a targeted spatial region for the use with implants

A system for altering bone growth on and within an orthopedic implant comprising:

• an implant body, wherein the implant body comprises an exterior surface and an interior surface defining an internal cavity of the implant body;
• a plurality of electrodes, wherein each electrode is at least partially embedded in the implant body, and comprises:
• a set of primary electrodes comprising at least one electrode, wherein a non-embedded segment of each primary electrode is proximal to a bone growth region including at least the defined internal cavity, the set of primary electrodes comprising at least two ring electrodes circumnavigating the defined internal cavity of the implant body, wherein one ring electrode circumnavigates the perimeter of the interior surface near the top of the internal cavity and the second ring electrode circumnavigates the perimeter of the interior surface near the bottom of the internal cavity,
• a set of secondary electrodes comprising at least one electrode, wherein a non-embedded segment of each secondary electrode is distal to the bone growth region, the set of secondary electrodes comprising at least one ring electrode circumnavigating the internal cavity near the middle of the internal cavity, and
• wherein the plurality of electrodes are configured to function in a stimulation operating mode, such that a subset of primary electrodes function as cathodes and a subset of secondary electrodes function as anodes;
• a control system comprising a processor, and circuitry that connects to the plurality of electrodes,
• wherein the processor comprises machine instructions configured to control current traveling through each electrode from the plurality of electrodes.