Abstract: A system for maintaining a desired spinal curvature of a user suffering from improper alignment of the vertebrae of the spine. In it's broad aspects, it comprises a sensor feedback system and electrodes. The sensor feedback system measures spinal curvature, determines whether selected conditions have been met warranting the application of electrical stimulation and provides information regarding the determination to an electronic stimulator. The electrodes are spaceably mounted on selected portions of the user's back. They are in electrical communication with the electronic stimulator for causing contraction of the back muscles at selected levels, thus providing alignment of the spinal vertebrae. The sensor feedback system includes a sensor assembly which comprises an upper elongated rigid segment, a lower elongated rigid segment and a sensor. The upper elongated rigid segment is positionable adjacent the user's upper spine.

Abstract: The present invention is a system for maintaining knee stability of a user suffering from damage of knee ligaments. It includes a sensor feedback system for measuring abnormal physical relationships between the tibia and femur. The sensor feedback system determines whether selected conditions have been met warranting the application of electrical stimulation and provides information regarding the determination to an electronic stimulator. Electrodes are spaceably mounted on selected portions of the user's hamstring and/or quadricep muscles in electrical communication with the electronic stimulator for causing contraction of the thigh muscles at selected levels, thus providing a posteriorly and/or anteriorly directed forces to the user's upper tibial bone and preventing its instability.

Abstract: An improved orthotic knee brace system for single and multiple posterior, anterior and lateral knee injuries includes first and second depending frameworks for attaching around a human leg, respectively, above and below the knee joint, the frameworks being hingedly interconnected for relative movement during walking. One of the frameworks bears a cammed surface adjacent the other framework, which other framework has a tibia-stabilizing force transfer mechanism in the form of a lever pivoted thereto. One arm of the lever bears an adjustable contact member adapted to contact the cammed surface, while another arm of the lever is pivotably connected to a tibia-bracing component adapted to wrap around the lower leg portion to prevent tibial displacement during knee movement, as in walking. Preferably, each framework has depending side strips connected to wrap-around leg straps, and the strips of one framework have offset members bearing the cammed surfaces.