Background: Crescent fracture is defined disruption of part of the sacroiliac joint completed as a fracture iliac wing posteriorly. It can be fixed by a variety of methods. Closed reduction and iliosacral screw fixation can provide adequate stabilization in certain cases of crescent fractures. Patients And Methods: The clinical study was aim at evaluating the clinical outcomes and functional scores of 30 patients (22 male and 8 female patients) aging from 28 to 54 years old. This study included 30 patients with LC fractures of pelvis and had been operated between April 2000 and June 2010. Plain X ray and CT of the pelvis were done for all cases. Day’s classification and exclusion of dysmorphic sacra were done. Percutaneous IS was used in all patients who were selected as Day type II and III. The average follow-up period was 14 months (range: 12–21 months). The principal goal of surgical intervention was the accurate and stable reduction of the sacroiliac joint.