Hyperextension is when the knee can bend a bit backwards.

Page updated November 2023 by Dr Sheila Strover (Clinical Editor)

Knee range of motion, showing that the normal knee may slightly hyperextend - in this case to -6 degrees.



Range of motion of the knee

A normal range of motion at the knee includes flexion, extension and a small amount of hyperextension.

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Dr Sheila Strover (Editor)
BSc (Hons), MB BCh, MBA

See biography...