Hyperextension

Written by Dr Sheila Strover on March 14, 2025

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.

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Range of motion of the knee

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

"...patients with joint hypermobility run an elevated risk of both graft re-rupture and contralateral ACL rupture."

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