Journal of the Korean Association of Oral and Maxillofacial Surgeons
- P-ISSN2234-7550
- E-ISSN2234-5930
- SCOPUS, KCI, ESCI
ISSN : 2234-7550
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Mandibular distraction osteogenesis for mandibular retrognathism caused by malunion of bilateral mandibular condyle fractures in childhood with temporomandibular joint dislocation: a case report
Ozaki Hisashi (Department of Oral and Maxillofacial Surgery, Kyoto Oral Health Care Center, Rakuwakai Otowa Hospital, Kyoto, JapanKyoto Jaw Deformity Center, Rakuwakai Otowa Hospital, Kyoto, Japan)
Mori Hiroki (Department of Oral and Maxillofacial Surgery, Kyoto Oral Health Care Center, Rakuwakai Otowa Hospital, Kyoto, JapanKyoto Jaw Deformity Center, Rakuwakai Otowa Hospital, Kyoto, Japan)
Takashima Morihiko (Department of Oral and Maxillofacial Surgery, Kyoto Oral Health Care Center, Rakuwakai Otowa Hospital, Kyoto, JapanDepartment of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan)
Imai Yuichiro (Department of Oral and Maxillofacial Surgery, Kyoto Oral Health Care Center, Rakuwakai Otowa Hospital, Kyoto, JapanDepartment of Oral and Maxillofacial Surgery, Nara Medical University, Kashihara, Japan)
Yokoe Yoshihiko (Department of Oral and Maxillofacial Surgery, Kyoto Oral Health Care Center, Rakuwakai Otowa Hospital, Kyoto, JapanKyoto Jaw Deformity Center, Rakuwakai Otowa Hospital, Kyoto, Japan)
Abstract
Untreated mandibular condyle fractures in childhood can result in significant jaw deformities, such as mandibular retrognathism, open bite, and facial asymmetry, which may necessitate surgical intervention in later years. Surgical approaches vary depending on the severity of the condition, including mandibular surgery alone, maxillomandibular surgery, or mandibular distraction osteogenesis (MDO). This report highlights a case involving mandibular retrognathism and open bite with condylar dislocation and malunion caused by untreated pediatric condyle fractures. Key challenges in this case included excessive anterior mandibular movement, irregular morphology of the mandibular ramus caused by malunion from fracture healing, and anteromedial dislocation of both condyles, all of which posed significant surgical complexities. The surgical approach combined Le Fort I osteotomy with MDO to perform maxillary impaction and mandibular advancement, followed by a secondary genioplasty. Notably, the dislocated temporomandibular joints were left untreated. Two years postoperatively, no relapse or recurrence of open bite was observed, and the dislocated condyles showed no positional and morphological changes, reflecting favorable outcomes. To our knowledge, this is the first reported case of orthognathic surgery combined with MDO for bilateral dislocated mandibular condyles, making it a valuable contribution to clinical practice.
- keywords
- Mandibular condyle fracture, Mandibular distraction osteogenesis, Mandibular retrognathism, Temporomandibular joint dislocation, Case reports
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