Injuries related to maintenance are connected to a training staff, such as muscle strains and tears.
Injuries not related to maintenance, such as ankle rolls, a broken hand, dislocated finger, have nothing to do with a training staff.
Injuries such as a torn ACL or Achilles could be structural or related to maintenance issues, poor balance, overload, compensation.
The question would be, what could someone else have done to prevent the injury. For a muscle strain it could be better recovery, stretching, improved strength, conditioning.
You can’t really prevent an ankle roll beforehand.