Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Posterior cruciate ligament mediated avulsion fracture of the lateral tibial condyle: a case report | Ogawa et al. Journal of Orthopaedic Surgery and Research 2010 5 67 http content 5 1 67 JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH CASE REPORT Open Access Posterior cruciate ligament mediated avulsion fracture of the lateral tibial condyle a case report Hiroyasu Ogawa1 Hiroshi Sumi2 Katsuji Shimizu1 Abstract Avulsion fractures of the posterior cruciate ligament PCL are uncommon. On the basis of the site of damage of the PCL hyperflexion pretibial trauma and hyperextension are proposed as mechanisms of PCL injuries. On the other hand avulsion fractures of the tibial condyle are also rare. We report a PCL-mediated avulsion fracture of the lateral tibial condyle along with the tibial insertion of the PCL by extension-distraction force on the knee that has not been previously described in any study. This rare case may imply that application of an extension-distraction force to the PCL cause the avulsion fracture. Background Avulsion fractures of the posterior cruciate ligament PCL are uncommon. A few mechanisms of PCL injuries have been proposed on the basis of the site of damage of the PCL 1 . The most common mechanism of avulsion fractures of the PCL at the tibial insertion is a dashboard injury in which the knee is in a flexed position and a posteriorly directed force is applied to the pretibial area 1 . Avulsion fractures of the tibial condyle are also rare 2 3 . The most common subset of avulsion fractures of the lateral tibial condyle is the Segond fracture. It is a small avulsion fracture of the proximal lateral tibial condyle that is induced by a force applied on the lateral capsule and the associated meniscotibial ligament 3 . Herein we report a PCL-mediated avulsion fracture of the lateral tibial condyle along with the tibial insertion of the PCL by a mechanism that to the best of our knowledge has not been previously described in any study. Our patient and his family were informed that the data obtained in this case would be submitted for
