New device promises reliable rehabilitation for balance disorders

 This just seems like a version of the Bosu ball with monitoring thrown in.  I always preferred the round side down, although harder to get on it, it had less chance of rolling an ankle

New device promises reliable rehabilitation for balance disorders

The University of the Basque Country (UPV/EHU) has presented a promising device designed to conduct measurements reliably and repeatably when treating the after-effects of stroke, vertigo, etc.

The UPV/EHU's COMPMECH research group has patented a mechatronic instrument that uses a mobile platform to stimulate the patient's balance in a controlled manner and measures his/her response. This prototype, which enables rehabilitation work to be systematized while monitoring the patient's evolution over time, is the result of close collaboration with professionals from different departments at Gorliz Hospital.

One of the main sequelae of stroke is partial loss of strength or partial paralysis. This condition means that patients who have suffered a stroke must undergo long rehabilitation processes to recover their balance and gait. The traditional techniques used in exercise-based assessments are not entirely objective, as they largely depend on the person carrying them out. So professionals from Gorliz Hospital suggested a need to objectify this assessment and systematize the evolution of patients during the rehabilitation process.

So the UPV/EHU's COMPMECH research group, which has expertise in mechatronics (a multidisciplinary branch of engineering that develops devices and technologies combining the branches of systems, electronics, mechanics, control and robotics), has developed a new prototype to "assess, exercise and rehabilitate a person's balance when standing on a surface by measuring his or her centre of pressure," explained Francisco Campa, a researcher in the group.

"Let's imagine we are standing while travelling on a bus," explained Campa. "When the bus moves off or brakes, the body, in order to balance itself, distributes its weight forwards and backwards supported by the soles of the feet against the floor. The resultant point of this force is known as the centre of pressure, and the study of its movement enables a person's balance to be assessed."

Control over balance stimulation

The prototype recently patented by the COMPMECH group has a platform on which the person with balance problems stands, and has two functions. The first is to stimulate the patient's balance, in other words, to provoke a reaction in order to see how he or she responds. "The mechanism we have designed raises the platform vertically or tilts it forward, from side to side or in any direction, with a certain amplitude and speed that is determined by the physiotherapist who is programming the machine," he pointed out. And the second function is to measure the patient's response: "The platform rests on four sensors that enable the force the patient is exerting on the platform to be measured. And on the basis of that force, the movement of the centre of pressure is determined," he added.