RADLEY BALKO: ‘Shaken baby syndrome’ and the flawed science in our criminal courts. “New research suggests that most humans aren’t capable of shaking an infant hard enough to produce the symptoms in SBS. It usually takes an accompanying blow to the head. And in about half to two-thirds of the 200 or so SBS cases prosecuted each year in the U.S., there are no outward signs of physical injury. Indeed, this is the reason SBS is such a convenient diagnosis. It allows prosecutors to charge a suspected abuser despite no outward signs of abuse. But we now know that other causes can produce these symptoms, which means that some percentage of the people convicted in SBS cases are going to prison for murders that may have never happened.”