Tehran University of Medical Sciences Journal of Orthopedic and Spine Trauma 2538-2330 8 3 2022 11 28 97 100 Seyed Peyman Mirghaderi Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran Sadula Sharifpour Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran Amirhossein Ghaseminejad Raeini Joint Reconstruction Research Center (JRRC), Tehran University of Medical Sciences, Tehran, Iran Maryam Salimi Student Research Committee, Shiraz University of Medical Sciences, Shiraz, Iran Alireza Moharrami Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, Iran Seyed Hadi Kalantar Joint Reconstruction Research Center, Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran 2021 11 16 2022 11 21 Background: Transolecranon fracture is an unstable intra-articular injury in the elbow caused by high-energy trauma. Here, we introduce a medial humerus plate for severely comminuted transolecranon fracture. Case Report: This article presents the case of a 29-year-old man who had a severely comminuted transolecranon fracture due to a motorcycle accident. A dorsal longitudinal approach was used in order to reach the fracture site. An olecranon anatomical plate and a medial humerus plate were applied for fixation, a new treatment method. The range of motion (ROM) was complete at a two-month follow-up, and the Mayo Elbow Performance Score (MEPS) was obtained 100 with no signs of complications. Conclusion: Despite the several methods available for fixing transolecranon fractures, using the medial humerus plate, especially in severe comminution, can yield acceptable results. It should be considered in future studies to prove its efficacy in this type of fracture. https://jost.tums.ac.ir/index.php/jost/article/view/344 https://jost.tums.ac.ir/index.php/jost/article/download/344/280