中山醫學大學2021-09-132026-04-012021-09-132021-09-13https://scholars.csmu.edu.tw/handle/123456789/8698An 11-year-old boy sustained blunt trauma with resultant right femur fracture. Complicated vascular injury of right lower limb was diagnosed later under suspicion, repeat physical examination and bedside sonography. Limb-threatening condition after a blunt injury is rare and early recognition is critical for emergent management. Although angiography is still the gold standard for evaluation in such situations, Doppler ultrasound might be an alternative method, as it is contrast media free and readily available.en-USarticle