Tehran University of Medical Sciences Journal of Orthopedic and Spine Trauma 2538-2330 7 3 2022 03 05 116 9 Arvin Najafi Department of Orthopedics, Shahid Madani Hospital, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Pouria Basiri Research Committee, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran   Salman Azarsina Department of Orthopedics, Shahid Madani Hospital, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Mohamad Sajad Mirhoseini Department of Orthopedics, Shahid Madani Hospital, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran Ehsan Seif Research Committee, School of Medicine, Alborz University of Medical Sciences, Karaj, Iran 2021 04 30 2022 01 06 Background: The Monteggia fracture-dislocation is a rare condition among children, and its treatment is still controversial. The treatment can become quite complicated when the diagnosis is delayed. There is a broad range of surgical treatments with various complications like subluxations, degenerative changes, and radial head deformity. The present case was reported as a novel surgical treatment choice for neglected Monteggia fracture-dislocation. Case Report: A 16 year-old boy presented with left elbow severe range of motion (ROM) limitation and pain who was diagnosed with neglected Monteggia fracture-dislocation. The patient went through open reduction beside internal fixation of the ulnar shaft via Limited Contact Dynamic Compression Plate (LC-DCP) and radio-capitellar joint reduction and provisional fixation by a pin. The patient recovered after three months with a significant increase in elbow ROM without any complications. Conclusion: This method could be an appropriate treatment of choice for neglected Monteggia fractures which indeed had excellent outcomes without complication. https://jost.tums.ac.ir/index.php/jost/article/view/277 https://jost.tums.ac.ir/index.php/jost/article/download/277/238