Screening test for whether ankle x-rays are indicated in acute ankle injuries.
This test should not be applied to patients with significant trauma, obvious deformity, or patients who are unable to provide reliable history / physical exam.
Sensitivity 100% for identification of ankle fractures (95% CI: 93% - 100%).
Shell, IG et al. Decision Rules for the Use of Radiography in Acute Ankle Injuries. JAMA. 1993; 269(9):1127-1132. Text