An orthotic device has first and second, elongated support members. The support members are pivotally connected at their respective proximal ends. The device further includes a tensioning member and a tensioning member retainer at the distal end of the first member. There are also first and second pairs...http://www.google.es/patents/US6537237?utm_source=gb-gplus-sharePatente US6537237 - Orthotic device
