This eponym refers to a an avulsion fracture of the lateral tibial plateau at the site of attachment of the lateral capsular ligament. It is frequently associated with tears of the anterior cruciate ligament (70 % predictive) or menisci.

A	AP radiograph of the knee. This shows an avulsion of the lateral tibial plateau.
B	Sagittal MRI. This sequence of images of the knee shows disruption of the ACL.

Links to online textbooks:

• Wheeless' Orthopedics: discussion of ACL tear

Links to online cases:

• Harvard University
• American Family Physician
• Emedicine.com

References:

• Hall FM, Hochman MG: Medial Segond-type fracture: cortical avulsion off the medial tibial plateau associated with tears of the posterior cruciate ligament and medial meniscus Skeletal Radiol. 1997 Sep;26(9):553-5.           [See related articles]
• Goldman AB, Pavlov H, Rubenstein D: The Segond fracture of the proximal tibia: a small avulsion that reflects major ligamentous damage AJR Am J Roentgenol. 1988 Dec;151(6):1163-7.           [See related articles]