Removable ankle brace
Return to activities as tolerated by pain
Full immobilization (cast or non-removable splint)
Referral to orthopedics
Repeat x-ray films (or MRI)
Radiograph-negative ankle injury 
Ankle fracture
Ankle pain
Salter-Harris fracture
Flank pain
Ligimentous injury
Distal radioulnar joint disruption
Contusion of bone or soft tissue