His arm hung practically useless, with no sign that it would ever improve.

His left leg was practically useless, and they had to help him through the lock, one on each side.

This made the guns very wet and practically useless in less than moderate seas.

The hardened metal, while fascinating, seemed to be practically useless in war.

This seems not only morally questionable, but also (potentially) practically useless.

This one is so small and difficult to hold that it is practically useless.

But because of the other's unusual power with words, the Zero team was rendered practically useless.

The entire process would be a long and practically useless exercise.

I understand from other teachers that he's practically useless in their classes.

He's practically useless, but the rest of you are worse.