The World championships, scheduled to be held in Las Vegas from September 7-12, will also be the first qualification tournament for the 2016 Rio Olympics.
"Yes, I have sustained an injury to my right shoulder while practising. So I would not be able to take part in the upcoming selection trials. So, automatically that rules me out of the first qualifying event for next year's Rio Olympic Games," Sushil told PTI.
Sushil's injury has ended what could have been a enthralling battle between the veteran wrestler and the young Narsingh Pancham Yadav in the selection trials slated for July 6-7 for a place in the World Championships.
After the World Championships, there are six more qualification tournaments, all of which are scheduled to be held next year, starting from March 2016.
The 32-year-old grappler said that it would not be wise to aggravate the injury as there are a number of qualifying events before the Olympics.