Tehran University of Medical Sciences Journal of Orthopedic and Spine Trauma 2538-2330 1 1 2015 07 21 109 109 Mohammad Hossein Nabian Department of Orthopedic and Trauma Surgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, IR Iran Mohammad Naghi Tahmasebi Department of Orthopedic and Trauma Surgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, IR Iran Sohrab Keyhani Department of Orthopedic and Trauma Surgery, Akhtar Hospital, Shahid Beheshti University of Medical Sciences, Tehran, IR Iran SM Javad Mortazavi Joint Reconstruction Research Center, Tehran University of Medical Sciences, Tehran, IR Iran Mohammad Reza Sobhan Department of Orthopedic Surgery, Shahid Sadoughi University of Medical Sciences, Yazd, IR Iran Leila Oryadi Zanjani Department of Orthopedic and Trauma Surgery, Shariati Hospital, Tehran University of Medical Sciences, Tehran, IR Iran 2019 07 18 Background: Orthopedic surgery of tibial plateau fractures has been a challenging procedure for a long duration. However, less-invasive surgical techniques have recently been developed for this condition. Objectives: In an interventional study with a historical control, we evaluated the medium-term functional and radiological outcomes of treatments for tibial plateau fractures using the arthroscopically assisted reduction and internal fixation (ARIF) and open reduction and internal fixation (ORIF) techniques. Patients and Methods: Eleven patients with tibial plateau fractures of Schatzker types I-VI were treated with ARIF, whereas 11 patients were matched historically as the ORIF group. There were no significant differences in gender, age, and fracture types between the groups (P > 0.05). At the last follow-up, range of motion, visual analogue score for pain, Rasmussen functional and radiographic scores, international knee society scoring system (IKSS) score, and the Ahlback radiologic scale score for osteoarthritis were evaluated. Results: All patients achieved union. The ARIF group had a shorter rehabilitation period, as well as a lower rate of midterm osteoarthritis and complications (P < 0.05). There were no significant differences between both groups according to other functional and radiologic assessments. Conclusions: We recommend that the ARIF technique is an acceptable alternative treatment for tibial plateau fractures, with good functional and radiological midterm results and without serious complications. https://jost.tums.ac.ir/index.php/jost/article/view/109 https://jost.tums.ac.ir/index.php/jost/article/download/109/109