TY - JOUR AB - Temporomandibular joint (TMJ) ankylosis in pediatric patients is rare and may cause severe micrognathia and obstructive sleep apnea syndrome. The present study reports on the treatment and 4‑year follow‑up of a pediatric patient with early‑onset bilateral TMJ ankylosis and severe secondary micrognathia, as well as obstructive sleep apnea syndrome. A typical ‘bird face’ appearance was noted with severe mandible retrognathism and a significant convex facial profile. The treatment of this patient involved TMJ ankylosis release with condylectomy and simultaneous bilateral mandibular distraction osteogenesis, which enabled the surgeons to simultaneously reconstruct the neocondyle and correct facial malformations. Following treatment, the micrognathia was corrected and the oropharyngeal airway was significantly expanded. However, the maximal incisal opening was limited. During the 4‑year follow‑up, no signs of mandible retraction were noted and mouth opening increased to 17 mm (passive) compared with the inability to open that was noted immediately following surgery. A certain degree of MIO shrinkage was identified in the patient. In such cases of TMJ ankylosis, early post‑operative exercise, active post‑operative physiotherapy and stringent follow‑up are essential to prevent post‑operative shrinkage and adhesions. AD - Department of Oral and Maxillofacial Surgery, Guanghua School of Stomatology, Hospital of Stomatology, Sun Yat‑sen University, Guangzhou, Guangdong 510055, P.R. China AU - Yu,Xingna AU - Wang,Jianning AU - Hou,Shida AU - Zeng,Rongsheng DA - 2019/12/01 DO - 10.3892/etm.2019.8119 EP - 4892 IS - 6 JO - Exp Ther Med KW - temporomandibular joint ankylosis mandibular distraction osteogenesis micrognathia obstructive sleep apnea syndrome PY - 2019 SN - 1792-0981 1792-1015 SP - 4888 ST - Mandibular distraction osteogenesis in the treatment of pediatric temporomandibular joint ankylosis with micrognathia and obstructive sleep apnea syndrome: A case report with 4‑year follow‑up T2 - Experimental and Therapeutic Medicine TI - Mandibular distraction osteogenesis in the treatment of pediatric temporomandibular joint ankylosis with micrognathia and obstructive sleep apnea syndrome: A case report with 4‑year follow‑up UR - https://doi.org/10.3892/etm.2019.8119 VL - 18 ER -