An AC joint injury is usually from lateral impact. The fact that he was clearly still carrying the elbow/arm may have caused him to avoid using it brace in contact, therefore loading up the shoulder on that lateral force at a level a bit higher than otherwise.
we have had the lowest number of injuries across the whole NRL, so it looks like the medical staff and conditioners are doing an exceptional job. For star it was his elbow...now it's his shoulder.
I was under the impression that rugby union for school is now finished, the last game he played was it, but as others have mentioned he needs to knuckle down and concentrate on his HSC now.
