Segond fracture and Pellegrini-Stieda MedPix

Description: Segond Fracture of the knee is a avulsion fracture at the lateral aspects of the proximal tibia at the insertion of the middle third of the lateral capsular ligament. It was first described by Paul Segond in 1879. Preceeding studies show a high association with anterior cruciate ligament tear(75%-100%). It is also associated with meniscal tears(66-75%). The fracture is a result of internal rotation and varus stress on a flexed knee. Pellegrini-Stieda is ossification of the medical collateral ligament at the attachment to the femor. It is associated with MCL and ACL injury.