A hyperextension injury is one caused by excessive hyperextension (knee bending backwards).
Momentum carries the person forward, but their foot cannot follow, leading to knee hyperextension.
Hyperextension and the PCL
Hyperextension is a classical modus of injury of the posterior cruciate ligament (PCL). There may also be damage to other structures of the posterolateral corner.
Synonyms:
bending knee backwards
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