Abstract: A surgical distraction apparatus is disclosed. The surgical distraction apparatus includes a tissue distraction device adapted for implantation, the tissue distraction device including a plurality of distraction members, one or more actuators adapted for implantation and operatively coupled to the tissue distraction device, the one or more actuators being configured to drive the tissue distraction device and adjust the alignment of the plurality of distraction members, and an activator adapted to deliver one or more pulses to at least one actuator in the one or more actuators.

Abstract: The inventions are directed to assemblies for interfacing three-dimensional movements of a person to a virtual environment or to a remote environment. The harness assemblies maintain the user in a desired location with respect to the virtual reality system thereby allowing the virtual reality system to capture the movements of the user The assemblies include a frame subsystem, a pivot subsystem, a cable management subsystem, a compliance subsystem, a vertical motion subsystem, a centering adjustment subsystem, a support arm subsystem, and a human restraint subsystem.