A Segond fracture is a small avulsion of the lateral tibial plateau. This fracture considered pathognomonic for ACL disruption. However, it should be noted that this fracture pattern is being seen with increasing frequency with PCL disruptions – particularly the reverse second fracture (this is an avulsion fracture of the medial proximal tibia). Paul Ferdinand Segond was a French surgeon who not only was a knee specialist but also perfected the vaginal hysterectomy.
