“…8,17 Currently, the following 5 US criteria are used to determine the presence of stress fractures: increased vascularity as demonstrated using color Doppler, periosteal elevation with a cortical break/loss of periosteal contiguity, periosteal reaction and early callus formation, hypoechoic area adjacent to the cortical break (corresponding to hematoma), and overlying soft tissue edema. 8,16,18 In this case, the following US criteria were initially noted: increased vascularity demonstrated with color Doppler, periosteal elevation, and cortical disruption. During serial US scans, we observed resolution of the hematoma, a decrease in vascularity, and development of a bridging callus over the area of cortical break.…”