KHẢO SÁT ĐẶC ĐIỂM HÌNH ẢNH TỔN THƯƠNG CỘT SAU NGOÀI VÀ CỘT SAU TRONG Ở BỆNH NHÂN GÃY MÂM CHÀY TRÊN CẮT LỚP VI TÍNH

Abstract

Objectives: The study aimed to evaluate the morphologic characteristics of the posterolateral and posteromedial fragment in tibial plateau fractures by using multidetector computed tomography (MDCT). Methods: A prospective cross-sectional study enrolled 105 patients with tibial plateau fractures from December 2023 to August 2024 at Hospital for Traumatology and Orthopaedics. The MDCT images of the knee were used to classify and evaluate morphologic characteristics. Results: The incidence of the posterolateral and posteromedial fragment were 26.7% and 25.7%, respectively. The mean major articular fracture angle of the posterolateral fragment was 9.46 ± 27.1 degree, and 12.39 ± 25.5 degree for posteromedial fragment. The mean articular surface area was 13.72 ± 10.21% for posterolateral fragment, and 27.11 ±13.86% for posteromedial fragment. The sagittal fracture angle of the posterolateral fragment was 79.56 ±17.58 degree, and the value of the posteromedial fragment was 69.75± 15.72 degree. The posterior cortical height of the posterolateral fragment and posteromedial fragment were 19.96± 9.2mm and 34.36± 8.79mm, respectively. The depression was 4.5± 4.3mm for posterolateral fragment and 2.82± 2.5mm for posteromedial fragment. Furthermore, the study found some correlations between the morrphologic characteristics above. Conclusion: Fractures of the posterior tibial plateau are not uncommon. MDCT is necessary for these injury patterns, and utilizing three – column classification provides accurate information about fracture morphology and injury mechanism, which guides better surgical management.