Q How long was the sickle-shaped claw on Utahraptor’s hind foot?

One of the most distinctive features of Utahraptor was the enormous sickle-shaped claw on the second toe of each hind foot.
The claw reached about 23 cm (9 inches) in length, roughly the size of a human head.
These sharp, curved claws are thought to have been powerful weapons, used to leap onto prey, drive the claws into its body, or sink them into the throat.