Khubchandani JA, et al. - This work examined geographic diffusion of acute care surgery (ACS) models of care and characterize the communities in which ACS implementation is lagging. Pairing a national survey of hospitals with geographic information systems and census data indicated that acute care surgery implementation has occurred unevenly across the United States. Researchers realized acute care surgery a potential solution to the national crisis in access to care for general surgery emergencies. This, however, has affected vulnerable populations differentially, leaving rural and less educated areas at higher risk of lacking access to emergency general surgery care.