Temporomandibular Joint Ankylosis in Pediatric Patient: An Unusual Bony Fusion Between Zygomatic Arch and Skull Bone

Case presentation: In this case report, we presented the management of a 6- year-old with a left TMJ ankylosis present since age 2 years. The clinical and imaging investigations were consistent with left temporomandibular joint ankylosis (Type IV). A left side gap arthroplasty via a modified Al Kayat Bramley approach with an interpositional arthroplasty placement of temporalis fascia graft. No post-operative complications were seen except a reduced mouth opening following initial days. Conclusion: In this case report we describe an unusual case of bony ankylosis between the zygomatic arch and the temporal bone following childhood trauma. The aetiology, imaging features and surgical techniques used along with the associated complications are discussed.