Marc winces in pain during a rehab session with physical therapist Sean Quinlan at the Spaulding Outpatient Center in Peabody. Marc reads in the paper that the lifetime cost of an above the knee prosthetic will be, minimum, $1.5 million. “I gotta get back to work, I gotta get going,” he says. But he can’t. Not yet. “I’ve got too much pain, too much medication,” he says.