As a collision sport, rugby union has a relatively high overall injury incidence, with most injuries being associated with contact events. Historically, the set scrum has been a focus of the sports ...

In rugby league a scrum is a way of re-starting play after: The ball has gone out to touch The ball has been knocked on A forward pass Play is too dangerous to continue Not everyone can join a scrum.

The scrum is a way to restart play after certain stoppages, like a forward pass or knock-on, or when the ball becomes unplayable in a ruck or maul.

Nonetheless, it is indeed an enigma. The scrum is broken. And World Rugby have come up with nothing to fix it, no law trial that attempts to resolve this calamitous set-piece, to make it a lot safer.