The 18-year-old was challenged from behind by the Dutchman, causing Elliot to dislocate his left ankle.
However, in real-time, match official Craig Pawson did not deem the tackle worthy of even blowing for a foul - let alone a red card, until VAR intervened.
Clattenburg said: "Referee Craig Pawson didn't even blow for a foul. As far as he was concerned, Struijk won the ball fairly.
"But VAR Darren England assessed the incident and because the injury was so bad, the officials reacted with a red for Struijk."
He went on to cite the double leg-break suffered by Luke Shaw years prior as an example of how similar incidents can be prevented, revealing: "It's a tough one. Years ago when I was with UEFA, we talked in-house about the Luke Shaw double leg break and how a corner was awarded after that incident.
"We discussed the best way to protect players and one way is to ensure that there are consequences for tackles which lead to serious injuries."
Need a VPN? Or seeking to switch? Then support Tribal Football by clicking here to sign up with our official partners NordVPN. Not only will you receive the best VPN experience, but also great discounts by signing up via Tribal Football. Thanks for your support!