Blood replacement
In both rugby union and rugby league, a blood replacement is a special kind of substitution which can be used in the case of a player having to leave the field of play temporarily to have a wound attended to. Both rugby union and rugby league are physically demanding games, so musculoskeletal injuries are common, as well as injuries to the head and neck, and fractures. During the IRB 2011 Rugby World Cup, a study was conducted to determine the frequency and nature of the injuries sustained. It confirmed that rugby, like many other contact sports, has a high incidence of injury.
Rugby union
In rugby union, blood replacements are provided for by Law 3.10 of the International Rugby Board.A player who has been wounded may be replaced for up to fifteen minutes, during which he or she may receive first-aid treatment to stanch the flow of blood and dress the wound. The player may then ask the referee to return to the pitch of play. The return-to-play regulation is a regulation in rugby union that reduces the likelihood of premature return-to-play by injured players. However studies have shown that there is a high rate of non-compliance with this regulation and therefore highlights the need for implementation and dissemination of the return-to-play regulation.