Clinical Study of 72 Mandibular Condylar Fracture Cases.

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  • SUZUKI Katsutoshi
    Dept. of Oral and Maxillofacial Surgery, Gunma University School of Medicine
  • MOGI Kenji
    Dept. of Oral and Maxillofacial Surgery, Gunma University School of Medicine

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  • 下顎関節突起骨折７２例の臨床的検討

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Abstract

The most common mandibular fractures involve the condyloid process. It is necessary to diagnose and treat the cases of mandibular condylar fracture carefully, because the temporomandibular joint is complicated anatomically and functionally.<BR>A clinical study was made in 72 patients with mandibular condylar fracture referred to the Department of Oral and Maxillofacial Surgery, Gunma University Hospital from April 1991 to March 1995.<BR>The results were as follows:<BR>1. Mandibular condylar fracture occurred in 42.6% of the mandibular fractures. The male-to-female ratio was 2 to 1. The largest age group of patients was from 10 to 19 years (31.9%).<BR>2. The most frequent cause of the injury was falls (50.0%). Of all the patients 84.7% visited our department within 2 weeks after injury.<BR>3. Fifty-nine cases (81.9%) were unilateral fractures and 13 (18.1%) were bilateral. Of the total, thirty-six cases (50.0%) were combined with other fractures of the mandible and/or maxillofacial fractures.<BR>4. As for the fracture level and position of fragment, fractures with deviation were most frequently observed in the subcondylar region (20.5%).<BR>5. Of the 67 cases treated at our department, 62 (92.5%) were treated with a conservative therapy for mandibular condylar fracture, primarily by maxillomandibular fixation followed by functional rehabilitation. The remaining 5 (7.5%) cases were treated surgically.<BR>6. Fifty-nine patients were recalled after more than 6 months. As for the treatment outcome in 54 nonsurgical cases, 46 cases (85.2%) showed excellent prognosis, 6 (11.1%) had disorder I and 2 (3.7%) had disorder II. In 5 surgical cases, 3 cases showed excellent prognosis and 2 had disorder II. Most of the patients treated nonsurgically had relatively good results.

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