A new study out of Southern California, where the things originated, is the first to quantify the damage. According to medical records from two UCLA hospitals in Los Angeles and Santa Monica, standing electric scooters have been associated with 249 emergency room visits between September 1, 2017 and and the end of August 2018. The list of reported injuries includes dislocations, bone fractures, lung contusions, soft-tissue injuries, and a splenic laceration. Most victims (91.6 percent) were riders who’d fallen, collided with an object, or were struck by a vehicle. But 8.4 percent were pedestrians who collided with scooters, tripped over them, or were attempting to lift them.