In this Ten Network footage from the 1978 Kangaroos tour, Steve Rogers and Bob 'Bozo' Fulton receive treatment from the team's doctor.
Rugby league is a highly physical contact team sport. Unlike its American counterpart, the players do not use much protective gear. Most players seem to rely on a mouth guard and their highly developed physiques. Occasionally players will use some form of padding and head gear. Not surprisingly the majority of injuries are muscular strains or contusions (bruising) from impact.
Concussion is of greater concern and is treated very seriously. Players are tested immediately after a head knock and leave the field for a HIA (Head Injury Assessment).