Discussion of Segond fracture
- Segond fracture is an avulsion fracture involving the proximal tibia immediately distal to the lateral plateau at the site of insertion of the middle third of the lateral capsular ligament (LCL)
- Results from excessive internal rotation and varus stress.
- Presence of a Segond fracture may indicate substantial meniscoligamentous injury, and anterolateral rotational instability must be considered to be present until proven otherwise.
- Association of the Segond fracture with:
 Imaging Findings for Segond fracture
- At routine radiography, the avulsed cortical fragment is constant in size and appearance, is directly lateral
- Best seen on the straight anteroposterior view of the knee.
- Healing of the Segond fracture is associated with a characteristic bone excrescence arising below the lateral tibial plateau.
- By using magnetic resonance imaging, marrow edema may be noted at the site of the avulsed cortical fragment, although the fragment itself may be difficult to demonstrate.
Patient #1: Segond fracture with ACL tear
 See Also
 External Links
 References for Segond fracture
- Juliana C. Campos, Christine B. Chung, Nittaya Lektrakul, Robert Pedowitz, Debra Trudell, Joseph Yu, and Donald Resnick. Pathogenesis of the Segond Fracture: Anatomic and MR Imaging Evidence of an Iliotibial Tract or Anterior Oblique Band Avulsion. Radiology 2001 219: 381-386.