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Table 2 Blake and McBryde classification for Floating Knee injuries

From: The floating knee: epidemiology, prognostic indicators & outcome following surgical management

Type 1 – True Floating Knee The knee joint is isolated completely and not involved, with either shaft fractured.
Type 2 – Variant Floating knee Involves one or more joints with either shaft fractured.
Type 2A The knee joint alone is involved
Type 2B Involves the hip or ankle joints