A hinge assembly is provided for an orthopedic knee brace. The knee brace includes upper and lower support arms. The hinge assembly includes a hinge plate and first and second gear members pivotally connected to the hinge plate. The first gear member is coupled for rotation with the upper support arm...http://www.google.sh/patents/US7306572?utm_source=gb-gplus-sharePatent US7306572 - Hinge assembly for an orthopedic knee brace and knee brace incorporating the hinge assembly
