BBC gameshow It's a Knockout was first broadcast on this day in 1966 (August 7) - with contestants taking part in a series of unusual challenges.There have been lots of different gameshows in the years since, with viewers watching contestants take part in series including Total Wipeout, Tumble and The Splash to name a few.However in recent years, lots of gameshows have seen their contestants suffer horrifying injuries as a result of the rigorous challenges - including a lot of our favourite celebrities.READ NEXT: Orlando Bloom unveils devastating back scar which nearly left him unable to walkFrom dislocated shoulders to life threatening situations, Daily Star takes a look at the most horrifying game show injuries ever.Total Wipeout followed in the footsteps of It's a Knockout, including a tough obstacle course that caused many celebrities to be injured during a special edition of the programme.The late Kenny Everett's former sidekick Cleo Rocos suffered a knee injury, which left her on crutches for over three weeks.Meanwhile, personal trainer Kevin Adams tore ligaments, Dominic Littlewood injured his leg and children's TV legend Kirsten O' Brien damaged her knee.It was also reported that former EastEnders actor Joe Swash dislocated his shoulder while taking part too.BBC game show The Splash saw celebrities learn to become professional divers, with a little help from stars including Tom Daley - but one celebrity suffered a life threatening situation.During filming, BBC presenter Rav Wilding suffered an injury to his leg during training and as a result, had to undergo surgery.However, he was later left fighting for his life after developing a blood clot on his lung following the injury - with the ordeal leaving him unable
