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."
Hyperextension is when the knee can bend a bit backwards. Page updated November 2023 by Dr Sheila Strover (Clinical Editor)

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