목적: The purpose of this study was to investigate the feasibility of endoscopic- assisted intranasal reduction without internal fixation for treating unilateral maxillary fracture or tripod fracture. 방법:In the period of August of 2013 to November of 2014, seven patients with maxillary wall fractures or tripod fractures underwent endoscopic assisted intranasal reductions. Fractured bony fragments were repositioned under guidance of ultrasonography. Additional Gillies approach was performed for reduction of zygomatic arch fracture. Postoperative computed tomography scans were performed. 결과:There were 6 men and one woman, ranging in age from 18 to 37 years. All patients had facial swelling and tenderness on physical examination. Two patients showed malar depression. Three operations were performed under general anesthesia and four operations were performed under local anesthesia. Postoperative CT showed well stabilized bony fragments and good facial contour without surgical complications. 결론:The authors suggested that endoscopic assisted intranasal reduction without internal fixation is feasible for treating unilateral maxillary fracture, or tripod fracture without severe dislocation.