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Table 2 The Hughston classification: classification of posterolateral instability assessed by varus instability

From: An isolated Posterolateral corner injury with rotational instability and hypermobile lateral meniscus: a novel entity

Classification Varus instability PCL injury
Grade I 0 – 5 mm Intact PCL
Grade II 5 – 10 mm Intact PCL
Grade III > 10 mm (soft endpoint) PCL rupture
  1. PCL posterior cruciate ligament