Abstract: A three axis passive motion exerciser which moves the patient's foot in dorsal/plantar, valgus/varus and abduction/adduction movements. A microprocessor provides signals to control motors which drive cradles and a plate in the desired motions. Potentiometers provide positional feedback information about the actual location of the cradles and the plate, with series resistors providing feedback of the actual motor drive current values. The microprocessor monitors the positions of two motions versus a master motion to keep the movements in synchronization. The movements are synchronized so that the end of the travel limit is reached for each axis simultaneously. The microprocessor further monitors the drive currents to prevent overcurrent conditions and the speeds to limit travel rates. A display and keyboard are provided to allow the operator to monitor and change operating parameters, such as travel limits, force limits and session times.

Abstract: An orthopedic brace for the reduction of long-bone fractures, which includes telescopic components (7, 8) which are made of an X-ray transparent material and form two transverse plates (9 and 10) at their opposite ends. A locking device (11) is composed of a slide (12) working in conjunction with two chucks (13 and 14) fitted to the periphery of the plates and position-adjusting devices for each flange are made up of three threaded rods (40) angularly equidistant, individually adjustable as to length and mounted in the corresponding plate by means of three ball-and-socket joints.