Aamir Khan's Ludhiana schedule of the biopic 'Dangal' had to be abruptly stalled as the actor who had been shooting for the film for the last 40 days collapsed suddenly at the Guru Nanak stadium. "Aamir had been filming a long action sequence that required multiple takes from different angles. When he slumped during the final take, the unit thought he had pulled a muscle. He was in excruciating pain even after half an hour of rest and ice packs. He couldn't even stand up. He was then rushed to the hospital where it was diagnosed that he had suffered a serious shoulder injury," the actor's spokesperson said.