Orthoses with microprocessor control placed around the joint of a patient are used to perform and to monitor isometric, range-of-motion, proprioception and isotonic exercises of the joint. A variety of improved hardware elements result in an orthosis that is easier to use and interacts more efficiently...http://www.google.com.tw/patents/US6872187?utm_source=gb-gplus-share專利 US6872187 - Orthoses for joint rehabilitation