Abstract: In a method and a system of providing walking assistance and/or therapy to a person with impaired gait, electrical stimulation is applied to muscles of a leg that effect dorsiflexion and plantar flexion of the ankle of the leg. The timing of the electrical stimulation is determined from gait event signals developed from sensors under the heel and forepart of the foot of the other leg. In the method and the system, the electrical stimulation is enabled when the person is sensed to be active and is disabled when the person is sensed to be inactive. The method and the system are applicable to persons having unilateral or bilateral impairment of their walking ability.

Abstract: A decorative device containing fluid and particles of motion which are propelled in motion by a rotating magnet within the fluid container. The rotating magnet within the fluid is propelled in rotation by a magnet external to the fluid container. The rotating magnet external to the fluid container is connected to and rotated by a rotary mechanism.

Abstract: An osteotomy frame for aligning first and second bone portions utilizing a pair of clamps intended for holding bone portions that have been created by use of a bone saw guide. An arm is connected to the first clamp and is pivoted relative to an axis. A scale interacts with the arm to indicate a value of rotation of the first bone portion about the axis, while being held by the first clamp.