[Clinical study on mandibular condylar fracture. 1. Retrospective study in 100 patients with 130 temporomandibular joint fractures with special consideration in the treatment for the various locations and forms of the fractures].

Clinical retrospective investigation was conducted on mandibular condylar fractures of 100 hospitalized cases at the Department of Oral Surgery, Kyoto University Hospital during the period from 1973 to 1983. The following results were obtained, 1. There were 74 males and 26 females. The age of the patients at the time of injury ranged from 4 to 78 years old. The average age was 28.1 years old. 2. Twenty-six patients were treated within a week of injury, 22 cases within 2-weeks and 33 cases were treated after more tham 3 weeks. 3. Of the 100 cases, 70 were unilateral fractures and 30 were bilateral. The incidence of the concomitant fractures of the mandible were higher in bilateral than in unilateral condylar fractures. 4. On fracture level and form 130-site in 100 patients were divided according to the classification of Maclennan and Kubo. Dislocated and high condylar fractures were most frequently observed. 5. Surgical reduction was mainly achieved in low neck fracture, and the contrary conservative treatment was observed in the higher level fracture. On the other hand condylectomy was infrequently indicated in the dislocated head fracture.