Correlation of stress radiographs to injuries associated with lateral ankle instability

Table 6 The anterior drawer test

	Anterior drawer < 5 mm	Anterior drawer ≥ 5 mm	Sn (%)	Sp (%)	PPV (%)	NPV (%)
OLT	30	13	70	57	64	68

The sensitivity, specificity, positive predictive value, and negative predictive value are documented for the presence or absence of peroneal pathology in relationship to the anterior drawer stress radiograph. Note that given the significant inverse relationship found between osteochondral lesions of the talus and stress radiographs, the predictive statistics were inverted as well utilizing a positive test as being an anterior drawer < 5 mm. Sn: Sensitivity; Sp: Specificity; PPV: Positive predictive value; NPV: Negative predictive value; OLT: Osteochondral lesions of the talus.