An adjustable orthosis for stretching tissue by moving a joint between first and second relatively pivotable body portions includes a first arm with a cuff at its outer end for releasably attaching the first arm to the first body portion, and a second arm with a cuff at its outer end for releasably attaching...http://www.google.es/patents/US5456268?utm_source=gb-gplus-sharePatente US5456268 - Adjustable orthosis