Concussion has been the hottest topic in professional rugby for the last decade.
In more recent times, awareness of the implications of repeated head blows – both concussive and sub-concussive – has intensified after early onset dementia diagnoses in former players like Wales internationals Ryan Jones and Alix Popham, and English World Cup winner Steve Thompson.
Their accounts are harrowing, so what is the sport doing to protect its players?
