We are getting a bit distracted by the issue of compensation though. The reason why it might cost all of us if United pays out is not because anyone sued them but rather because of the sloppiness, inattentiveness, incompetence or otherwise of their staff. Surely, anyone trained and working in an aircraft knows there are passengers sleeping in the seats that could possibly be injured and actions made to avoid them?

Whatever the circumstances with the OP - even if their two legs were both sticking in the aisle, they should not end up with a bleeding leg due to action of flight crew. I cannot imagine such ever happening on NH or SQ, for example, and if by chance it did it would not have been dismissed with a 7500 miles offer, and you find your way off the plane and take care of your leg yourself.