Creating a Diagnostic Decision Rule for Shoulder Injury: CASH-trial

What combination of ≤ 6 clinical variables will give the highest specificity for indicating significant shoulder injuries (fractures or dislocations) with a set sensitivity of ≥ 97%? Although shoulder trauma is a common injury, there is no clinical decision rule to determine the necessity for radiography for these traumas. With this trial the investigators aim to develop such a rule to reduce the amount of radiographs without missing any significant injuries. The primary objective is to compose a set of clinical diagnostic criteria predictive of shoulder fractures or dislocations that would reduce the amount of radiographs without missing any significant injuries. A second objective is to determine if the clinical decision rule is applicable for triage use.