A system and method for controlling the radiation emissions from an x-ray tube having an anode, a cathode, and a grid is disclosed. In an embodiment, ADOBE\u2122 FLEX\u2122 user UI components subscribe to JMX broadcast notifications. A series of switches is used to selectively illuminate the LEDs according to the input voltage and current, with more LEDs being lit as the input voltage or current increases. The fixator may be affixed to the lower arm and hand by spaced-apart elongate distal mounting pins with lower ends adapted or mounting in the metacarpal bone and by spaced-apart elongate radial mounting pins with lower ends adapted for mounting in the radius. The first and second radio interfaces can operate, at least in part, using the same frequency bandwidth.