The feasibility of enhancing postural stability using externally applied forces

This report describes work carried out on a pilot study to investigate the feasibility of using externally applied forces to enhance the postural stability of standing patients. The long term aim of the research is the development of a new treatment system for the rehabilitation of patients with a variety of postural or ambulatory disabilities. The concept is based upon applying directional forces to a patient by means of electronically controlled actuators, in order to provide the stability which they lack. Eventually the treatment system would incorporate a structure to support the actuators and patient allowing the training of stability in walking as well as standing. The report covers all stages in the development of an initial prototype actuator system, covering fundamental design specifications through to commissioning and testing. Although rudimentary, some clinical tests are described and conclusions are drawn regarding the feasibility of the concept of externally enhancing stability. More exhaustive trials are left to a further study.