Outcomes of treatment for intracapsular fractures of the mandibular condyle: recommendation for a new classification

Publication date: February 2018
Source:British Journal of Oral and Maxillofacial Surgery, Volume 56, Issue 2
Author(s): B.B. Ying, Q.Q. Zhang, S.S. Zhu, Y.F. Li
We know of no universally accepted classification for intracapsular condylar fractures. We propose here a new classification based on the concept of a "disc-condyle" unit, and validate the classification based on outcomes of treatment. From 1 January 2010 - 31 December 2014, 55 patients with unilateral intracapsular condylar fractures were classified into three types: type A has no reduction in mandibular height or displacement of the disc (n=7); type B has displacement of the disc with no reduction in mandibular height (n=17); and type C has reduced mandibular height with or without displacement of the disc (n=31). We treated types B and C by open reduction and fixation, while type A fractures were managed non-surgically. At six month follow-up, we found no significant differences in the vertical height of the ramus, mandibular deviation, protrusion, or lateral protrusion between the fractured and healthy sides. All patients had normal occlusion postoperatively and only one patient (type C) reported pain. Magnetic resonance imaging and computed tomography showed good osseous healing and disc-condylar relations in all cases. Our results show that this new classification of intracapsular condylar fractures is a safe and easy way to obtain satisfactory outcomes of treatment. However, it needs further independent validation.



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