Fig. 1

Flowchart of Classification of Injuries. ^aThe following types of injuries were categorized as acute injuries: abrasion; concussion; contusion; dislocation; fracture; hemorrhage; hernia; hyperextension; internal injury (non-hemorrhage); laceration; ligament sprain (complete tear, incomplete tear, severity unknown); muscle strain (complete tear, incomplete tear, severity unknown); tendon strain (complete tear, incomplete tear, severity unknown); nerve injury; separation; torn cartilage; avulsion; multiple injuries; and subluxation. However, if injuries of these types were reported to be due to an overuse/chronic or illness mechanism, then they were not included in the acute category; they were categorized as detailed below. ^bThe following types of injuries were categorized as overuse injuries: blister; bursitis; inflammation; stress fracture; tendonitis; apophysitis; plantar fasciitis; shin splints; and spondylolysis AND/OR any injury reported to be due to an overuse/chronic mechanism. ^cThe following types of injuries were categorized as other injuries: burn; dehydration; heatstroke/heat; infection (including skin infection); frostbite/cold related; cardiac event (acute); chronic disease/trait; respiratory event; heat illness/injury; and mental health concern AND/OR any injury reported to be due to an illness, other, or unknown mechanism