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Segond fracture
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Segond fracture

Contributors: Derek T. Schloemann MD, MPHS, Sandeep Mannava MD, PhD
Other Resources UpToDate PubMed

Synopsis

Causes / typical injury mechanism: Flexion and internal rotation of the knee is the typical mechanism of injury in a Segond fracture / anterolateral ligament (ALL) injury.

Classic history and presentation: The typical patient is an athlete with a noncontact pivot or cutting injury, or a patient with history of blunt force applied directly to the knee.

Prevalence: Risk factors: Risk factors are the same as for ACL injury and include female sex, small femoral notch, and ligamentous laxity.

Pathophysiology: The Segond fracture is traditionally thought to represent a capsular avulsion fracture of the ALL off the proximal anterior lateral tibia.

Grade / classification system: No classification for the injury itself but the Lachman test on physical examination is typically reported for the associated ACL injury –
  • Grade 1: < 5 mm translation
  • Grade 2: 5-10 mm translation
  • Grade 3: > 10 mm translation
    • A: Firm endpoint.
    • B: No firm endpoint.

Codes

ICD10CM:
S82.126A – Nondisplaced fracture of lateral condyle of unspecified tibia, initial encounter for closed fracture

SNOMEDCT:
735671008 – Fracture of lateral condyle of tibia

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Last Reviewed:05/03/2021
Last Updated:05/03/2021
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Segond fracture
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