A research team studying touch and movement in prosthetic limbs at the Cleveland Clinic was just awarded a $2.5 million contract from the Defense Advanced Research Projects Agency (DARPA) to develop a suite of outcome metrics for advanced prosthetic limbs. 

Through DARPA’s new Hand Proprioception and Touch Interfaces (HAPTIX) program, Dr. Paul Marasco and his team of researchers at the Cleveland Clinic's Lerner Research Institute department of biomedical engineering will evaluate and identify and quantify the different technologies being used in prosthetic arms. “There’s no way to identify whether something works better or worse,” he says. “We’re trying to develop new ways to get a good sense of how these prosthetic limbs operate.”
Dr. Paul Marasco 
Today’s advanced prosthetics work with the nervous system to actually provide sensation in the artificial limb, Marasco explains. While the technology has seen significant advancements in recent years, there is no standardized set of metrics to evaluate these technologies. This lack of information makes it difficult to communicate benefits to patients and demonstrate improved outcomes to insurance payers.

“We are developing metrics based on how people’s brains respond,” says Marasco. "How they move, how much attention they’re paying, reaction times.”

Each of the three groups involved in the research, including the Cleveland Clinic, the University of Alberta and the University of New Brunswick, will focus on two metrics. Marasco will coordinate all of the groups. “We operate as one big team, spread across Alberta, New Brunswick and Cleveland,” he says. “We’re working hard to blur that line between what’s prosthesis and what’s machine. We’re developing prosthetics where what you feel matches what you see – providing the illusionary feel that the prosthetic arm is part of the body.”