Statistics from Altmetric.com
Concussion is the number one injury risk in contact and collision sports. Identification of concussive events is critical to optimise injury management and, as identified by Quarrie and Murphy,1 to undertake accurate injury surveillance studies.
The Zurich Consensus Statement on Concussion2 provides an expanded theoretical or conceptual definition of concussion but there is not yet an operational definition of concussion.
In 2012 World Rugby introduced a new pitch side process for assessment of head injuries, called the head injury assessment (HIA).3 During the evolution of this process an operational definition of concussion has been developed and successfully implemented.
This World Rugby operational definition of concussion was developed with the intent of increasing recognition and sensitivity of diagnosis within the sport and subsequently to improve player welfare and safety. Confirmed cases of concussion must follow the recommended rest and graduated return to play programme that serves as a final part of the serial evaluation process.
An operational definition of concussion
During the development of this operational definition of concussion it was agreed that this definition should address the timing of concussion assessment(s), how the diagnosis of concussion is confirmed or excluded and the …