Radiography and CT are used to evaluate pelvic and acetabular fractures. The Judet-Letournel classification system is used to classify fractures for better treatment planning and prognostication. Common fracture types include T-shaped, both-column, transverse, and elementary posterior wall fractures. Radiographs can identify disrupted ilioischial and iliopectineal lines but CT better characterizes occult fractures and fracture fragments. Examples shown include a T-type fracture disrupting both lines, a transverse fracture disrupting both lines with intact pubic rami, and a posterior wall fracture disrupting the posterior rim.