한국인 하악과두골절에 관한 임상적 연구

THE CLINICAL STUDY ON CONDYLAR FRACTURES OF KOREAN

This is a retrospective study on mandibular condyle fracture of Korean. The sutdy was based on a series of 135 patients who had been treated for the fracture of mandibular condyle as inpatient at Dental Hospital of Yonsei Univ. Medical center, Ewha W. Univ. Hospital and Seoul National Univ. Hospital for the period of January, 1982 to June, 1986. 1. The ratio of male/female was 3.4:1 which indicated much higher incidence in male. The 2nd decade (39.3%) was the highest age group and the next was the teenager and one less than 10 in decreasing order in incidence. The age range was 1 year to 67 years. 2. There was slight difference in etiology as in result of falldown (34.1%), fist blow (33.3%) and traffic accident (32.6%). 60 cases (44.4%) were complicated with teeth injury. 3. Concomitant fractures in mandible other than condyle were associated in 89 cases (65.9%) with decreasing order of symphysis (76.4%), body (15.0%) and angle (5.6%). 4. 107 cases (73.8%) had unilateral fracture site and 28 cases (26.2%) bilateral. The frequent location of fracture line were condylar neck (46.6%), condylar head (40.0%) and subcondyle (13.5%) in order. The order of fragment configuration was displacement (41.7%), deviation (33.7%), dislocation (16.0%) and no displacement (8.6%). In the 2nd decade and one less than 10, the displacement showed peak incidence. In the teenager and 3rd decade, the deviation showed peak incidence. 5. Cases of open reduction (52.8%) were given for the treatment of the condyle fracture, which was somewhat more than nonsurgical treatment.