http://en.wikipedia.org/wiki/David_Busst
"David Busst is most famous for an horrific career-ending broken leg in a Premiership match on April 8, 1996 for Coventry, against Manchester United. Two minutes into the match, Busst collided with United players Denis Irwin and Brian McClair, resulting in extensive fractures to both the tibia and fibula of his right leg. The match had to be delayed for 15 minutes while the blood was cleaned off the pitch. It is reputed that Manchester United's goalkeeper Peter Schmeichel vomited on the pitch upon seeing the injury and had to have counselling afterwards."
**So, David Busst's injuries were the result of a collision. The reference above neither blames anyone or mentions the word accident...however, Brian McClair's foot caused the broken leg.