No, it was a knee injury just after his transfer from Middlesbrough to Sunderland. Was a great player Brian Clough and scored loads of goals, would of possibly been a member of the 1966 World Cup squad had it not been for that career finishing injury. The injury i believe happened just before we were about to play Sunderland in the fifth round of the F.A Cup, he didn't play and his place was taken by a youngster called Nick Sharkey, who i think scored their goal.