Basic and patient-oriented researchIntracapsular Condylar Fracture of the Mandible: Our Classification and Open Treatment Experience
Section snippets
Materials and Methods
From 1999 to 2008, 354 cases (480 joints) were diagnosed with mandibular condyle fractures and treated in the TMJ division of Shanghai's Ninth People's Hospital. Among the joints, 312 (65%) had intracapsular fractures, 147 (30.6%) had condylar neck fractures, and 21 (4.4%) had subcondylar fractures.
The charts of 229 patients with 312 joints with intracapsular fractures were reviewed. Of the patients, 195 had CT scan records before treatment. We reviewed their general information, cause of
Results
The age of the 195 patients ranged from 1 to 83 years. There were 57 female and 138 male patients. The cause of injury was as follows: fall, 93 patients (47.7%) (with a fall from a height in 22); motor vehicle accident, 34 patients (17.4%); bicycle accident, 24 patients (12.3%); workplace injury, 13 (6.7%); motorcycle accident, 6 patients (3.1%); sports, 3 patients (1.5%), and assault, 1 patient (0.5%). The cause in the other 21 patients was unknown (10.8%).
In the 195 patients, 269 joints were
Discussion
Our data showed that intracapsular fracture is the most common type of condylar fracture, accounting for 65% of cases. This is in contrast to the literature showing that subcondylar fracture is the most common type, accounting for 71% of cases.16, 17 It is possible that in many cases, intracapsular fractures are undiagnosed at the time of injury.18 In our division we perform a coronal CT scan in every patient if condylar fracture is suspected, which is more accurate and sensitive than
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This work was supported by the Science and Technology Commission of Shanghai (08DZ2271100).