Apparatus for cycling the lower back of a person through a substantial range of lordosis. The apparatus includes a substantially static structure adjacent to the back of a person and a force applying apparatus disposed between the static structure and the back of the person. The force applying apparatus...http://www.google.com/patents/US5637076?utm_source=gb-gplus-sharePatent US5637076 - Apparatus and method for continuous passive motion of the lumbar region
