A hyperextension injury is one caused by excessive hyperextension (knee bending backwards).

hyperextension injury
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.

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Synonyms: 
bending knee backwards
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Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...