as better seen by the closeup view at fig1 b the general connection means for such drives include a turning gear 82 a disengagement pin 83 to a friction plate 84 behind which a spring brake 85 is pushing away from an interior wall of device 10 though not shown one or more of these drives can be supplemented with and or superseded by wormgears and or other temporary lockout mechanisms in one embodiment of the invention device 10 remains affixed to the patient 39 s bone and can be connected disconnected and reconnected to drives 74 and 76 for making periodic adjustments depending on the materials selected for mainframe 50 and the various bone connectors as well as whether the drive units remain u201c on board u201d for near full time healing management the device itself has the potential to be rendered mri compatible to better serve the preferred functions of monitoring the healing of bone with an electromechanically driven device 10 there are a series of force gauges positioned about the mainframe 50 preferably an upper force gauge 94 intermediate gauge 96 and lower force gauge 98 are commonly wired for providing a feedback signal for when measurable stress and or strain reductions have occurred such changes from a preset norm being indicative of the degree of bone callous formed and from which subsequent movements of the fixator can be precisely planned one such force gauge sensor is a flexiforce pressure sensor as made and sold by parallax though it to be understood that any one or more known or subsequently conceived force sensors can be substituted for same with the aforementioned device and its preferred combinations of motors breaks.