Reduction of Temporomandibular Joint Dislocation With Open Approach Using Prearticular Incision Following Sagittal Split Ramus Osteotomy

Bilateral sagittal split osteotomy (BSSO) is the most commonly performed in orthognathic surgery for jaw deformities. Temporomandibular joint (TMJ) dislocation is a rare intraoperative complication. Here, we present the case of a 22-year-old woman with a history of habitual TMJ dislocation who complained of a protruding lower jaw and underwent reduction of temporomandibular joint dislocation with open approach using prearticular incision following BSSO. Postoperative panoramic radiograph revealed that the right condylar head was dislocated anteriorly. In the second surgery, the proximal segment including the condyle, could not be reduced in the proper position. Therefore, we exposed and reduced the dislocated mandibular condyle while confirming the mandibular condylar head using intraoral and preauricular approaches. In this third surgery, mandibular condyle was successfully reduced using these approaches. To the best of our knowledge, this is the first case report describing a reduction in TMJ dislocation with a preauricular incision following BSSO.