Hi,
I had a hog who was tangled up in some string earlier on in the summer. Unfortunately I didn’t manage to catch him, despite sitting up all night and watching for him for a week. It might work if you put some sort of house near by the food. Even a box with some hay in it, it might tempt him to nap in the box and you could check in the morning and see if he’s inside.
If his injury is bad it might be best to get him seen by a vet or hand him into a rescue , he might need some antibiotics or have a deep wound that you can’t see.
Good luck
