The injury is so common in the latter that several medical groups have called for a ban on the sport, including the American Academy of Neurology, the World Medical Association, and the medical associations of the UK, the US, Australia, and Canada.
Skaden er så almindelig i sidstnævnte, at flere medicinske grupper har anmodet om et forbud mod sporten, heriblandt American Academy of Neurology, World Medical Association og lægeforeningerne i Storbritannien, USA, Australien og Canada.