Segond fracture

Case contributed by Andrew Taylor
Diagnosis almost certain


Pain post twisting injury at football.

Patient Data

Gender: Male

Large suprapatellar joint effusion. A curvilinear osseous fragment is projected parallel to the lateral margin of the tibial epiphysis consistent with a Segond fracture.

Further evaluation with MRI is recommended to evaluate for ACL and meniscal injury.

Case Discussion

A Segond fracture is an avulsion fracture from the lateral aspect of the tibial plateau. It is also referred to as the lateral capsular sign. It has a strong association (approximately 75% of cases) with disruption of the anterior cruciate ligament. MRI is essential to define internal injury and plan appropriate treatment. 

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